Loki, The Bestial Trickster

Indestructible
As long as your devotion to blue, red, and green is
less than ten, Loki isn't a creature.
Whenever you cast a creature spell, put a +1/+1 counter on Loki.
{x}{x}{u}{u}{u}, Loki becomes a copy of target creature with Converted Mana Cost X until end of turn.
{x}{x}{x}{x}{g}{g}{g}{g}{g}, Loki has base power and toughness X until end of turn.
{x}{x}{r}{r}, {t}, Deal X damage to target
creature.