Ghost Face

—Stay there and be a good girl...

Whenever an opponent discards a card, exile it from their graveyard with a stash counter on it.
During your turn, you may play cards you don't own with stash counters on them from exile, and mana of any type can be spent to cast those spells.

{3}{b}, {t}: Each opponent discards a card (Sorcery)

{10} Opponents may pay this cost on their turn to hear
me say "UWUUUU"