Bloodthirsty Revenant

Bloodthirsty Revenant cannot Block.
If you have more than 30 life, Bloodthirsty
Revenant gets +2/+3.
Whenever you gain life, you may return
Bloodthirsty Revenant from your graveyard
to the battlefield.
"Even if a Vampire be properly slain; mayhap
its Thirsty Haunt return again and again." -Jacob
Willbury, Travelling Exocist, teaching children