Lady Tremaine - Sinister Socialite (124)

Boost 2 {I} (Once during your turn, you may pay 2 {I} to put the top card of your deck facedown under this character.)
EXPEDIENT SCHEMES Whenever this character quests, if you've put a card under her this turn, you may play an action with cost 5 or less from your discard for free, then put that action card on the bottom of your deck instead of into your discard.