Oubliette

Card Text

When one of your units would be discarded from the Character arena, remove all counters from it and put it face-down beneath Oubliette instead. Keep Oubliette face-up in your build queue.

Remove X counters from your Resource    Take a unit with total build cost X from beneath Oubliette and put it into the Character arena untapped. Remove Oubliette from the game.