Ena, the Shifting Fractal

Converge — Ena, the Shifting Fractal enters the battlefield with a +1/+1 counter on it for each
color of mana spent to cast it.
{1}: Ena, the Shifting Fractal becomes the color
of your choice until end of turn.
Creatures you control that share a color with Ena
get +X/+X, when X is the number of +1/+1
counters on Ena.