Weavile

Shroud, Hexproof, First Strike
Whenever a creature blocks Weavile, you may pay {u}{g}. If you do, that creature doesn't untap during it's controller's next untap step.
Whenever Weavile deals combat damage to a player, you may pay {b}{w}. If you do, draw a card.
It lives in snowy regions. It carves messages in trees as a signal to others.