Can an 18th level hastened mobile wood-elf monk move at over 100 mph?
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One of my players wants to say his monk can kill a T-Rex in a single blow, by simply ramming it. The pitch goes like this:
- As a wood elf he has a base speed of 35 feet.
- The Mobile feat increases this to 45.
- Being 18th level monk adds +30, so we're at 75 ft.
- His wizard friend casts Haste on him. Being under the haste spell doubles his speed, to 150, and adds an action.
- Dash doubles the 150 speed to 300.
- Having two actions from Haste means he can Dash twice, so that's 600 feet of movement.
- Finally, he can spend 1 ki point for Step of the Wind and thus Dash one more time as a bonus action. So we arrive at 900 feet of movement, in a turn lasting 6 seconds.
Now do the math: 900 feet per six seconds equates to 102 mph.
Something being hit by an object weighing as much as Medium humanoid that is traveling 100 mph, well, Ouch. But never mind killing a T-Rex. My question is, can he really go 100 mph? Every DM instinct I have says, this has gotta be wrong. Is it?
dnd-5e rules-as-written optimization
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up vote
3
down vote
favorite
One of my players wants to say his monk can kill a T-Rex in a single blow, by simply ramming it. The pitch goes like this:
- As a wood elf he has a base speed of 35 feet.
- The Mobile feat increases this to 45.
- Being 18th level monk adds +30, so we're at 75 ft.
- His wizard friend casts Haste on him. Being under the haste spell doubles his speed, to 150, and adds an action.
- Dash doubles the 150 speed to 300.
- Having two actions from Haste means he can Dash twice, so that's 600 feet of movement.
- Finally, he can spend 1 ki point for Step of the Wind and thus Dash one more time as a bonus action. So we arrive at 900 feet of movement, in a turn lasting 6 seconds.
Now do the math: 900 feet per six seconds equates to 102 mph.
Something being hit by an object weighing as much as Medium humanoid that is traveling 100 mph, well, Ouch. But never mind killing a T-Rex. My question is, can he really go 100 mph? Every DM instinct I have says, this has gotta be wrong. Is it?
dnd-5e rules-as-written optimization
1
I hope your friend is aware that he's going to kill himself as well. Hitting a solid object at 100mph is quite fatal to humanoids.
– Erik
1 hour ago
add a comment |Â
up vote
3
down vote
favorite
up vote
3
down vote
favorite
One of my players wants to say his monk can kill a T-Rex in a single blow, by simply ramming it. The pitch goes like this:
- As a wood elf he has a base speed of 35 feet.
- The Mobile feat increases this to 45.
- Being 18th level monk adds +30, so we're at 75 ft.
- His wizard friend casts Haste on him. Being under the haste spell doubles his speed, to 150, and adds an action.
- Dash doubles the 150 speed to 300.
- Having two actions from Haste means he can Dash twice, so that's 600 feet of movement.
- Finally, he can spend 1 ki point for Step of the Wind and thus Dash one more time as a bonus action. So we arrive at 900 feet of movement, in a turn lasting 6 seconds.
Now do the math: 900 feet per six seconds equates to 102 mph.
Something being hit by an object weighing as much as Medium humanoid that is traveling 100 mph, well, Ouch. But never mind killing a T-Rex. My question is, can he really go 100 mph? Every DM instinct I have says, this has gotta be wrong. Is it?
dnd-5e rules-as-written optimization
One of my players wants to say his monk can kill a T-Rex in a single blow, by simply ramming it. The pitch goes like this:
- As a wood elf he has a base speed of 35 feet.
- The Mobile feat increases this to 45.
- Being 18th level monk adds +30, so we're at 75 ft.
- His wizard friend casts Haste on him. Being under the haste spell doubles his speed, to 150, and adds an action.
- Dash doubles the 150 speed to 300.
- Having two actions from Haste means he can Dash twice, so that's 600 feet of movement.
- Finally, he can spend 1 ki point for Step of the Wind and thus Dash one more time as a bonus action. So we arrive at 900 feet of movement, in a turn lasting 6 seconds.
Now do the math: 900 feet per six seconds equates to 102 mph.
Something being hit by an object weighing as much as Medium humanoid that is traveling 100 mph, well, Ouch. But never mind killing a T-Rex. My question is, can he really go 100 mph? Every DM instinct I have says, this has gotta be wrong. Is it?
dnd-5e rules-as-written optimization
dnd-5e rules-as-written optimization
asked 1 hour ago


Valley Lad
4118
4118
1
I hope your friend is aware that he's going to kill himself as well. Hitting a solid object at 100mph is quite fatal to humanoids.
– Erik
1 hour ago
add a comment |Â
1
I hope your friend is aware that he's going to kill himself as well. Hitting a solid object at 100mph is quite fatal to humanoids.
– Erik
1 hour ago
1
1
I hope your friend is aware that he's going to kill himself as well. Hitting a solid object at 100mph is quite fatal to humanoids.
– Erik
1 hour ago
I hope your friend is aware that he's going to kill himself as well. Hitting a solid object at 100mph is quite fatal to humanoids.
– Erik
1 hour ago
add a comment |Â
2 Answers
2
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up vote
5
down vote
No
Unless I missed something, this is not how dash works.
Having two actions from Haste means he can Dash twice, so that's 600 feet of movement.
Dash says
When you take the Dash action, you gain extra Movement for the current turn. The increase equals your speed, after applying any modifiers.
Note that Dash does not increase your speed, it just gives you extra movement. Your speed is 150 ft at that point, and so is your movement. Using 3 dashes (two from actions and one from bonus action) will increase your movement by 3*150 = 450 ft to a total of 600 ft, which equals 68mph and is, therefore, less than 100 mph.
I like this. So we've got him down to 70 mph! That's a start. What damage that would do on a "hit" (ram? body-slam?) is obviously for a separate question.
– Valley Lad
1 hour ago
@ValleyLad mind you, the monk would also take massive damage ^^
– PixelMaster
56 mins ago
Also, RAW, damage would be... zero. Not amazing I guess.
– HellSaint
49 mins ago
add a comment |Â
up vote
1
down vote
Not really.
The speed with haste is correct, but you make some mistakes with the Dash action. Dashing does not double a creature's speed, rather it grants a creature extra movement equal to its speed1. Therefore the wood elf monk would move 600 feet per turn2.
Regardless, that's not even close to the top speed a player character can reach. For example a hasted Tabaxi monk can go 1120 feet per turn3. Several other spells, magic items, and class dips can push that figure well over 2000 feet per turn.
However, none of this means that character should be able to collide with another creature for massive damage. D&D certainly has no rules for doing so. The closest thing is falling damage, but that is only meant to handle creature-to-ground collisions.
- The Dash action says:
When you take the Dash action, you gain extra movement for the current turn. The increase equals your speed, after applying any modifiers.
- Base hasted speed = (35+10+30)*2 = 150. Feet per turn = speed * (movement + 3 dahses) = 150*4 = 600.
- Base hasted speed = (30+10+30)*2 = 140. Feet per turn = speed * (movement + 3 dahses) * (feline agility) = 140*4*2 = 1120.
add a comment |Â
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
5
down vote
No
Unless I missed something, this is not how dash works.
Having two actions from Haste means he can Dash twice, so that's 600 feet of movement.
Dash says
When you take the Dash action, you gain extra Movement for the current turn. The increase equals your speed, after applying any modifiers.
Note that Dash does not increase your speed, it just gives you extra movement. Your speed is 150 ft at that point, and so is your movement. Using 3 dashes (two from actions and one from bonus action) will increase your movement by 3*150 = 450 ft to a total of 600 ft, which equals 68mph and is, therefore, less than 100 mph.
I like this. So we've got him down to 70 mph! That's a start. What damage that would do on a "hit" (ram? body-slam?) is obviously for a separate question.
– Valley Lad
1 hour ago
@ValleyLad mind you, the monk would also take massive damage ^^
– PixelMaster
56 mins ago
Also, RAW, damage would be... zero. Not amazing I guess.
– HellSaint
49 mins ago
add a comment |Â
up vote
5
down vote
No
Unless I missed something, this is not how dash works.
Having two actions from Haste means he can Dash twice, so that's 600 feet of movement.
Dash says
When you take the Dash action, you gain extra Movement for the current turn. The increase equals your speed, after applying any modifiers.
Note that Dash does not increase your speed, it just gives you extra movement. Your speed is 150 ft at that point, and so is your movement. Using 3 dashes (two from actions and one from bonus action) will increase your movement by 3*150 = 450 ft to a total of 600 ft, which equals 68mph and is, therefore, less than 100 mph.
I like this. So we've got him down to 70 mph! That's a start. What damage that would do on a "hit" (ram? body-slam?) is obviously for a separate question.
– Valley Lad
1 hour ago
@ValleyLad mind you, the monk would also take massive damage ^^
– PixelMaster
56 mins ago
Also, RAW, damage would be... zero. Not amazing I guess.
– HellSaint
49 mins ago
add a comment |Â
up vote
5
down vote
up vote
5
down vote
No
Unless I missed something, this is not how dash works.
Having two actions from Haste means he can Dash twice, so that's 600 feet of movement.
Dash says
When you take the Dash action, you gain extra Movement for the current turn. The increase equals your speed, after applying any modifiers.
Note that Dash does not increase your speed, it just gives you extra movement. Your speed is 150 ft at that point, and so is your movement. Using 3 dashes (two from actions and one from bonus action) will increase your movement by 3*150 = 450 ft to a total of 600 ft, which equals 68mph and is, therefore, less than 100 mph.
No
Unless I missed something, this is not how dash works.
Having two actions from Haste means he can Dash twice, so that's 600 feet of movement.
Dash says
When you take the Dash action, you gain extra Movement for the current turn. The increase equals your speed, after applying any modifiers.
Note that Dash does not increase your speed, it just gives you extra movement. Your speed is 150 ft at that point, and so is your movement. Using 3 dashes (two from actions and one from bonus action) will increase your movement by 3*150 = 450 ft to a total of 600 ft, which equals 68mph and is, therefore, less than 100 mph.
edited 57 mins ago
PixelMaster
6,7192180
6,7192180
answered 1 hour ago
HellSaint
17.1k467144
17.1k467144
I like this. So we've got him down to 70 mph! That's a start. What damage that would do on a "hit" (ram? body-slam?) is obviously for a separate question.
– Valley Lad
1 hour ago
@ValleyLad mind you, the monk would also take massive damage ^^
– PixelMaster
56 mins ago
Also, RAW, damage would be... zero. Not amazing I guess.
– HellSaint
49 mins ago
add a comment |Â
I like this. So we've got him down to 70 mph! That's a start. What damage that would do on a "hit" (ram? body-slam?) is obviously for a separate question.
– Valley Lad
1 hour ago
@ValleyLad mind you, the monk would also take massive damage ^^
– PixelMaster
56 mins ago
Also, RAW, damage would be... zero. Not amazing I guess.
– HellSaint
49 mins ago
I like this. So we've got him down to 70 mph! That's a start. What damage that would do on a "hit" (ram? body-slam?) is obviously for a separate question.
– Valley Lad
1 hour ago
I like this. So we've got him down to 70 mph! That's a start. What damage that would do on a "hit" (ram? body-slam?) is obviously for a separate question.
– Valley Lad
1 hour ago
@ValleyLad mind you, the monk would also take massive damage ^^
– PixelMaster
56 mins ago
@ValleyLad mind you, the monk would also take massive damage ^^
– PixelMaster
56 mins ago
Also, RAW, damage would be... zero. Not amazing I guess.
– HellSaint
49 mins ago
Also, RAW, damage would be... zero. Not amazing I guess.
– HellSaint
49 mins ago
add a comment |Â
up vote
1
down vote
Not really.
The speed with haste is correct, but you make some mistakes with the Dash action. Dashing does not double a creature's speed, rather it grants a creature extra movement equal to its speed1. Therefore the wood elf monk would move 600 feet per turn2.
Regardless, that's not even close to the top speed a player character can reach. For example a hasted Tabaxi monk can go 1120 feet per turn3. Several other spells, magic items, and class dips can push that figure well over 2000 feet per turn.
However, none of this means that character should be able to collide with another creature for massive damage. D&D certainly has no rules for doing so. The closest thing is falling damage, but that is only meant to handle creature-to-ground collisions.
- The Dash action says:
When you take the Dash action, you gain extra movement for the current turn. The increase equals your speed, after applying any modifiers.
- Base hasted speed = (35+10+30)*2 = 150. Feet per turn = speed * (movement + 3 dahses) = 150*4 = 600.
- Base hasted speed = (30+10+30)*2 = 140. Feet per turn = speed * (movement + 3 dahses) * (feline agility) = 140*4*2 = 1120.
add a comment |Â
up vote
1
down vote
Not really.
The speed with haste is correct, but you make some mistakes with the Dash action. Dashing does not double a creature's speed, rather it grants a creature extra movement equal to its speed1. Therefore the wood elf monk would move 600 feet per turn2.
Regardless, that's not even close to the top speed a player character can reach. For example a hasted Tabaxi monk can go 1120 feet per turn3. Several other spells, magic items, and class dips can push that figure well over 2000 feet per turn.
However, none of this means that character should be able to collide with another creature for massive damage. D&D certainly has no rules for doing so. The closest thing is falling damage, but that is only meant to handle creature-to-ground collisions.
- The Dash action says:
When you take the Dash action, you gain extra movement for the current turn. The increase equals your speed, after applying any modifiers.
- Base hasted speed = (35+10+30)*2 = 150. Feet per turn = speed * (movement + 3 dahses) = 150*4 = 600.
- Base hasted speed = (30+10+30)*2 = 140. Feet per turn = speed * (movement + 3 dahses) * (feline agility) = 140*4*2 = 1120.
add a comment |Â
up vote
1
down vote
up vote
1
down vote
Not really.
The speed with haste is correct, but you make some mistakes with the Dash action. Dashing does not double a creature's speed, rather it grants a creature extra movement equal to its speed1. Therefore the wood elf monk would move 600 feet per turn2.
Regardless, that's not even close to the top speed a player character can reach. For example a hasted Tabaxi monk can go 1120 feet per turn3. Several other spells, magic items, and class dips can push that figure well over 2000 feet per turn.
However, none of this means that character should be able to collide with another creature for massive damage. D&D certainly has no rules for doing so. The closest thing is falling damage, but that is only meant to handle creature-to-ground collisions.
- The Dash action says:
When you take the Dash action, you gain extra movement for the current turn. The increase equals your speed, after applying any modifiers.
- Base hasted speed = (35+10+30)*2 = 150. Feet per turn = speed * (movement + 3 dahses) = 150*4 = 600.
- Base hasted speed = (30+10+30)*2 = 140. Feet per turn = speed * (movement + 3 dahses) * (feline agility) = 140*4*2 = 1120.
Not really.
The speed with haste is correct, but you make some mistakes with the Dash action. Dashing does not double a creature's speed, rather it grants a creature extra movement equal to its speed1. Therefore the wood elf monk would move 600 feet per turn2.
Regardless, that's not even close to the top speed a player character can reach. For example a hasted Tabaxi monk can go 1120 feet per turn3. Several other spells, magic items, and class dips can push that figure well over 2000 feet per turn.
However, none of this means that character should be able to collide with another creature for massive damage. D&D certainly has no rules for doing so. The closest thing is falling damage, but that is only meant to handle creature-to-ground collisions.
- The Dash action says:
When you take the Dash action, you gain extra movement for the current turn. The increase equals your speed, after applying any modifiers.
- Base hasted speed = (35+10+30)*2 = 150. Feet per turn = speed * (movement + 3 dahses) = 150*4 = 600.
- Base hasted speed = (30+10+30)*2 = 140. Feet per turn = speed * (movement + 3 dahses) * (feline agility) = 140*4*2 = 1120.
edited 1 min ago
answered 27 mins ago


Ruse
4,404642
4,404642
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1
I hope your friend is aware that he's going to kill himself as well. Hitting a solid object at 100mph is quite fatal to humanoids.
– Erik
1 hour ago