Devilish Valet + Mayael's Aria + Avenger of Zendikar + Vedalken Orrery

Devilish Valet

Mayael's Aria

Avenger of Zendikar

Vedalken Orrery

How it works

1. At the beginning of your upkeep, Mayael's Aria triggers.
2. Holding priority, cast Avenger of Zendikar by paying 5.
3. Avenger of Zendikar enters the battlefield, triggering itself and Devilish Valet.
4. Resolve the Avenger of Zendikar trigger, creating a 0/1 Plant creature token for each land you control.
5. Each Plant token enters the battlefield, triggering Devilish Valet that many times.
6. Resolve a Devilish Valet trigger, doubling its power until end of turn.
7. Repeat step 6 for each remaining Devilish Valet trigger.
8. 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.