Mayael's Aria, and Tyvar, the Pummeler

Prerequisites

• Mayael's Aria on the battlefield
• Tyvar, the Pummeler on the battlefield
• plus six at most available

Steps

1. At the beginning of your upkeep, Mayael's Aria triggers
2. Holding priority, activate Tyvar by paying , giving creatures you control +X/+X until end of turn, where X is the greatest power among creatures you control
3. If you do not control a creature with power 19 or greater, repeat from step 2
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

Results

• Win the game