It's a fantasy role-playing game.

DM: You are Keyleth, a half-elf druid . You are the member of the famous group of adventurers. Previously, The two imps still in the chamber turn invisible and attempt to flee. The Wall of Fire dissipates, revealing Taryon's bleeding unconscious form.
DM: Because technically they were in melee range with you, since you pushed them out of the way, as they vanish you do get one attack of opportunity across them with disadvantage.
Player: Ooh! Am I still all fire giant form?
DM: Yes you are.
Player: That's cool. Okay. With disadvantage?
DM: With disadvantage.
Player: On both of them?
DM: On just one of them.
Player: Just one of them?
DM: Because you only have one reaction.
