Generous Masochist

Hobble {2}{b} (You may cast this spell for its Hobble
cost. If you do, it enters the battlefield with a -1/-1
counter on it.)
Other creatures you control get +1/+1 for each
-1/-1 counter on this creature.
{1}{b}, {t}: Put a -1/-1 counter on this creature.
Every day she feeds a bit more of herself to her peers.