Mayael's Aria + Chameleon Colossus

步骤

1. At the beginning of your upkeep, Mayael's Aria triggers.
2. Holding priority, activate Chameleon Colossus by paying {2}{G}{G}, causing it to get +X/+X until end of turn, where X is its power.
3. Repeat step 2 until Chameleon Colossus has power 20 or greater.
4. 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.