Rules FAQ
- If the character enters play as a duplicate, that duplicate will be discarded from play at the end of the phase. If the duplicate is no longer in play at that point, nothing will happen to the character.
Action: Put an Army or Knight character into play from your discard pile. At the end of the phase, if that card is still in play, discard it from play (cannot be saved).
Link: Decklists
Rules FAQ