Freya, Witch of the Triads

As long as there are at least three unique three color pairings among permanents you control, you may cast Freya 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. This effect reduces only the amount of colored mana you pay.

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, Freya deals 3 damage to target creature if
it's red, and target