D&D 5E Command + Warcaster + Booming blade = 8d8+str?

[mellored]

Correct me if i'm wrong, but...

if you use command/dissonant whispers/fear to make an enemy flee, which provokes an OA,
then you use warcaster to attack with booming blade.
would the secondary damage of booming blade not immediately trigger?

also seems to work with polearm master.

 

[Noctem]

In before people tell you that you can't make an enemy flee with command for example if it will provoke an OA.

So let's see, booming blade says that if the target moves it takes damage. The OA itself happens when a creature leaves your reach but before it actually does so. Basically you're asking if the effect being placed on a creature during the act of moving out of your reach would treat the triggering movement which allowed the OA in the first place to also proc the extra damage. It's an interesting question no doubt. I can see it 2 ways:

1. The movement is interrupted by the OA meaning that the creature attacked, after resolving the OA, can decide to keep moving or not since it now knows that if it does it will take more damage. The movement which triggers the OA can't also proc the bonus damage since the action to move was taken before the OA triggers and the effect of booming blast comes into play.

2. The movement is interrupted by the OA, true, but the movement has already been taken which means it can't be stopped and since the effect is now in place before the movement is completed it triggers the secondary damage instance.

hm.

 

[Ravix]

They can't choose to stop moving away in the mentioned cases though, so I would say it works as described.

 

[Greg Benage]

Yes, but first the enemy has to fail the save and you have to hit with the OA, otherwise 0 damage. Assuming 60% for each, your expected damage at level 17 is about 15. Probably not the best use of your action at that level.

 

[Ravix]

Well yeah, you'd probably be doing things other than casting Command at level 15.

You can do this combo as early as level 1.

 

[mellored]

Yes, but first the enemy has to fail the save and you have to hit with the OA, otherwise 0 damage. Assuming 60% for each, your expected damage at level 17 is about 15. Probably not the best use of your action at that level.

It's 17 damage, AND the enemy spend his action moving away.
AND any other ally can make an OA.

There's also fear at higher level, which is more useful against a horde.

Or combine it with arcane trickster 9 and greater invisibility. Then they have disadvantage, and you get advantage. Bless or precision strike can help too.

[/quote]Well yeah, you'd probably be doing things other than casting Command at level 15. [/quote]Command is just as powerful at 15 as it is at 1.

But yes, you can do it at 1.

 

[Greg Benage]

It's 17 damage, AND the enemy spend his action moving away.
AND any other ally can make an OA.

Okay, 17 damage instead of 15. The enemy spending his action moving away and the ability for other allies to OA is just the command spell, not the combo.

Command is just as powerful at 15 as it is at 1.

Yes, it's just not as powerful as all the other things you could do with that action.

But yes, you can do it at 1.

Absolutely. And if the creature fails its save, and if you hit with your opportunity attack, it will do +4.5 damage. Cool.

 

[TheBigHouse]

yea. I don't see why it wouldn't work, unless your DM decides that fear or command is not "willingly moving"