Mayael's Aria and Devilish Valet on the battlefield.
There is an enchantment with mana value five or greater on the battlefield.
({G} magic symbol) ({W} magic symbol) available.
Steps
At the beginning of your upkeep, Mayael's Aria triggers.
Holding priority, cast Aura Mutation by paying ({G} magic symbol) ({W} magic symbol) , destroying target enchantment with mana value five or greater, and creating at least five 1/1 Warrior creature tokens.
When the Warriors enter the battlefield, Devilish Valet triggers that many times, doubling its power that many times, causing its power to be at least 32 until end of turn.
Resolve the Mayael's Aria trigger, causing you to put a +1/+1 counter on each creature you control, gain 10 life and win the game.