Yamar, the Yeti Beast

Colored mana to play this must be paid by
using snow covered lands.
Whenever a snow covered land enters the battlefield under your control, reveal the top 5
cards of your deck then add 1 Yeti creature
card from among them to your hand.
{b}{g}{u}: Cast a Yeti creature card from your
hand, without paying it's mana cost, it gains haste
and trample.