Mayael's Aria + Dark Depths + Solemnity

Mayael's Aria

Dark Depths

Solemnity

How it works

1. Play Dark Depths, which enters with zero ice counters due to Solemnity.
2. Dark Depths triggers, causing you to sacrifice it and create a 20/20 Marit Lage legendary creature token.
3. At the beginning of your next upkeep, Mayael's Aria triggers, causing you to gain ten life and win the game.