Biovisionary + Echo Mage + Quasiduplicate

Biovisionary

Echo Mage

Quasiduplicate

How it works

1. Cast Quasiduplicate by paying its mana cost, targeting Biovisionary.
2. Holding priority, activate Echo Mage by tapping it, copying Quasiduplicate twice, with both copies targeting Biovisionary.
3. Resolve all Quasiduplicate spells, creating three token copies of Biovisionary.
4. At the beginning of your end step, each Biovisionary triggers. Resolve the first trigger, causing you to win the game.

This clever cloning scheme hinges on Echo Mage reaching level 4 or greater, which upgrades its tapping ability to copy a targeted instant or sorcery spell twice rather than just once. By pointing Quasiduplicate at Biovisionary and multiplying it on the stack with the Mage, you instantly flood the battlefield with the required quorum of four identical wizards in a single turn. Best of all, even if your initial spell is met with removal, Quasiduplicate's jump-start mechanic gives you a built-in safety net to try the whole trick again straight from the graveyard.