Fetro, the Undergrowth

{g/u}: Fetro, the Undergrowth becomes a 4/4 Black Necromancer creature until end of turn.
Creatures you control have +X/+X until end of
turn where X is the number of creatures you
control that have power 3 or more.
"The greatest might is from the ones of the outdoors,
the least is from those hiders—the lazy ones, the ones
who think they're 'powerful,' like the goblins."
— Ukain, Mighty Protector