Count Ymir, Mother of Fingers

As long as there are at least three unique three
color pairings among permanents you control, you
may cast Ymir by paying 3 life. The first spell you
cast each turn that is exactly three colors costs {w}{u}
{b}{r}{g} less to cast. Whenever you cast a spell that
is exactly three colors, gain 3 life if it's white, scry 3
if it's blue, target opponent loses 3 life if it's black,
deal 3 damage to target creature if it's red, and
target creature gains +3/+0 until end of turn if it's
green.