RulingHall of Heroes (rules 1.0–1.4)

Core Set questions: Can you request an action to remove an encounter card attachment for another player, like say, with Black…

Question

Can you request an action to remove an encounter card attachment for another player, like say, with Black Panther’s Vibranium, out of turn like all other actions?

Answer

That sounds like a small oversight to me. You absolutely can ask a friend to resolve the Hero Action on an encounter card during your turn.

-Caleb