Ayame Shirohana

Chronal Shift - {p/u}, {t}: Choose one —
• Target creature phases out.
• Cast a sorcery or instant spell from your hand
without paying its mana cost. At the beginning
of your next upkeep, pay the mana cost of the
cast spell, or you lose the game.

Cast from Hit Points - {x}: Put X -1/-1 counters on Ayame, deal twice that much damage to target creature.