Azha, Blinding Archon

: When Azha enters the battlefield, Azha gains loyalty equal to your devotion to white, then destroy all nonwhite permanents you control.
-4: Put two +1/+1 tokens on each creature for each white mana in their mana cost, then, put two -1/-1 counters on each non-white creature.
-8: Each non-white creature gains Fading, then put X fade counters on them where X is half their converted mana cost, rounded down.