The Wild Hunt

You may reveal this card from your opening
hand. If you do, at the beginning of your first
main phase, add {g} to your mana pool.
Devour 2 (as this enters the battlefield, you may
sacrifice any number of creatures. This creature
enters the battlefield with twice that many +1/+1
counters on it)
At the beginning of your upkeep, if the number
of +1/+1 counters on the Wild Hunt is four or
greater, Amass 2.