Omnath, Locus of Color

Omnath, Locus of Color is all colors.
Whenever you cast a spell that targets Omnath,
if that spell was white, put a +1/+1 counter on
each creature you control. If that spell was blue,
draw two cards. If that spell was black, you may
destroy target creature. If that spell was red,
Omnath deals 3 damage to any target. If that
spell was green, you may search your library for
a basic land card, put it onto the battlefield, then
shuffle your library.