Simic Ascendancy + Master Biomancer + Eldrazi Conscription + Belt of Giant Strength

Simic Ascendancy

Master Biomancer

Eldrazi Conscription

Belt of Giant Strength

How it works

1. Cause another creature to enter the battlefield under your control with at least 20 +1/+1 counters on it due to Master Biomancer.
2. Simic Ascendancy's second ability triggers, putting 20 growth counters on Simic Ascendancy.
3. At the beginning of your next upkeep, Simic Ascendancy's third ability triggers, causing you to win the game.

To pull off this staggering win, we first supercharge Master Biomancer by enchanting it with Eldrazi Conscription and outfitting it with the Belt of Giant Strength, heavily discounting the equip cost thanks to the creature's immense stats. This pushes Master Biomancer's power to dizzying heights, ensuring that any subsequent creature you play enters the battlefield with twenty or more additional +1/+1 counters. The moment that monstrous newcomer arrives, Simic Ascendancy immediately swallows up those twenty growth counters in one fell swoop, setting up its upkeep trigger to hand you the game on a silver platter.