Bradux, Healer Without Sides

Either side of this card can be cast for its mana value.
Sacrifice a creature: put a +1/+1 counter and a
menace counter on target creature.
Whenever a permanent leaves a graveyard, add {w} to your mana pool.
If ten or more creatures die in a single turn, transform Bradux, Healer Without Sides.
—
"Of course I tend to the enemy fallen. Are they not deserving as much as you?"