Calvern, Blizzard Caller

Other yetis you control get +1/+1
{1}{g/u}{g/u}{g/u}: Target creature gets -0/-3 until end of turn. Calvern, Blizzard Caller deals 2 damage to target player. Tap target creature.
{x}{g/u}{t}: Choose one: Create X 1/1 yeti token creatures or create 1 X/X yeti creature token.