Oyaminartok, Polar Werebear has hexproof if it hasn't dealt damage yet.
Whenever Oyaminartok deals combat damage to a player, create a Food token.
, Sacrifice a Food: Draft a card from Oyaminartok's spellbook. When you do, add ![Blue](/Handlers/Image.ashx?size=small&name=U&type=symbol)
![Blue](/Handlers/Image.ashx?size=small&name=U&type=symbol)
. Spend this mana only to cast blue creature spells.