Mayael's Aria, Auriok Bladewarden, and Sword of the Paruns

Prerequisites

• Mayael's Aria on the battlefield
• Auriok Bladewarden on the battlefield
• Sword of the Paruns on the battlefield
• Sword of the Paruns attached to Auriok Bladewarden
• (at most) available

Steps

1. At the beginning of your upkeep, Mayael's Aria triggers
2. Holding priority, activate Auriok Bladewarden by tapping it, giving itself +X/+X until end of turn, where X is its power, which is increased by 2 due to Sword of the Paruns
3. Activate Sword of the Paruns by paying , untapping Auriok Bladewarden
4. Repeat from step 2 until Auriok Bladewarden has power nineteen or greater, omitting step 3 on the final iteration
5. Resolve the Mayael's Aria trigger from step 1, causing you to put a +1/+1 counter on each creature you control, gain 10 life and win the game

Results

• Win the game