Biovisionary + Mnemonic Deluge + Relm's Sketching

Cast Mnemonic Deluge by paying , exiling Relm's Sketching and casting three copies of it without paying their mana costs.

Resolve the three Relm's Sketching copies, creating three token copies of Biovisionary.

At the beginning of your end step, each Biovisionary you control triggers.

Resolve the first trigger, causing you to win the game.