Onagga, the Found

Level up {u}{b}{g} ({u}{b}{g}: Put a level counter on
this. Level up only as a sorcery.) 3/1
Level At the beginning of each upkeep, you may
1-3 sacrifice another creature. If you do, you
` gain life equal to it's power. 4/3
Level Double strike
4+ Pay 5 life: Draw 5 cards. 5/5