Sovereign Okinec Ahau, Simic Ascendancy, and Mossbridge Troll

Prerequisites

• Sovereign Okinec Ahau on the battlefield
• Simic Ascendancy on the battlefield
• Mossbridge Troll on the battlefield

Steps

1. Activate Mossbridge Troll by tapping any other creatures you control except Sovereign Okinec Ahau with total power 10 or greater, giving Mossbridge Troll +20/+20 until end of turn
2. Declare Sovereign Okinec Ahau as an attacker
3. Sovereign Okinec Ahau triggers, putting twenty +1/+1 counters on Mossbridge Troll
4. Simic Ascendancy's first ability triggers, putting 20 growth counters on it
5. At the beginning of your next upkeep, Simic Ascendancy's second ability triggers, causing you to win the game

Results

• Win the game at the beginning of your next upkeep