Atogatog + Mayael's Aria + Megatog

Atogatog

Mayael's Aria

Megatog

How it works

1. At the beginning of your upkeep, Mayael's Aria triggers.
2. Holding priority, activate Megatog by sacrificing an artifact, giving it +3/+3 until end of turn.
3. Repeat step 2 three additional times.
4. Activate Atogatog by sacrificing Megatog, giving Atogatog +15/+15 until end of turn.
5. Resolve the Mayael's Aria trigger, causing you to put a +1/+1 counter on each creature you control, gain ten life, and win the game.