Greg, Uncontrollable Strength

Battlecry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)
{1}{r} : Greg, Uncontrollable Strength gains
Wither until the end of turn (It deals damage to creatures in the form of -1/-1 counters.)
{1}{w}{w},{t} : Creatures you control get +0/+1 and
vigilance until end of turn
"I told you he would join"
—Nikosu of the Third Wave