Woo Lim, Altraz' Wish

You may cast spells from your hand with converted mana cost of 6 or lower for {s}{s}{s} rather than paying for their mana
cost. If you cast a creature this way, it enters with a Frostbite counter.
Permanents you control with Frostbite counters has Exort.
Sacrifice a Snow Creature; Add {s}.