Biovisionary + Mnemonic Deluge + Cackling Counterpart

Biovisionary

Mnemonic Deluge

Cackling Counterpart

How it works

1. Cast Mnemonic Deluge by paying 6, exiling Cackling Counterpart and casting three copies of it without paying their mana costs.
2. Resolve the three Cackling Counterpart copies, creating three token copies of Biovisionary.
3. At the beginning of your end step, each Biovisionary you control triggers.
4. Resolve the first trigger, causing you to win the game.