D&D 5E Mask of Many Faces Combat Idea

[TrueBagelMan]

So I thought of a concept while in combat. If I took out one of the enemies without them knowing could I use Disguise Self to make myself appear as them and make myself not get attacked by them? As long as my ruse doesn’t fail me. As a DM would you allow advantage on the first attack roll for a PC doing this since they fooled them into believing in who they are.

 

[rgoodbb]

Kind'a how the Doppelganger does it

 

[J-H]

Sure, maybe with a Deception check.
I did flat out allow it with unintelligent skeletons and a Hat of Disguise before.

 

[delphonso]

Depends on the conditions of the fight, but yeah, generally I'd give the player a reward for doing cool naughty word.