Dr. Mundo, Madman

At the beginning of your upkeep remove target counter from Dr. Mundo, Madman
Dr. Mundo, Madman gets +1/0 for every
-0/1 counter on it.
{2}{u}{r}: Put a -0/1 counter on Dr. Mundo,
Madman then put a -0/1 counter on every other creature
Mundo too strong for you!