Jazcaw, the Awoken

Flying, Trample, Deathtouch
Whenever you cast this card you get an Awakening counter.
Jazcaw, the Awoken enters the battlefeild with +1/+1 counter equal to the number of Awakening counters you have.
This card costs {1} more for each Awakening counter you have.
{3}{b}, Sacrefice a creature: Return this card from your graveyard to your hand. You get Awakening counters equal to the sacreficed creatures converted mana cost.