Yuffie, Materia Hunter

Shadow, Hexproof
Whenever a creature deals combat damage to
you, put a limit counter on Yuffie, Materia Hunter.
Limit Break - Remove three limit counters from Yuffie, Materia Hunter: Target opponent reveals their hand. You may choose an instant or sorcery card from it. Exile that card. You may play that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.