Cast Mind Games with buyback by paying 2, targeting Biovisionary.
Orvar's first ability triggers, creating a token copy of Biovisionary.
Resolve Mind Games, tapping Biovisionary and returning Mind Games to your hand.
Repeat two additional times, foregoing paying the buyback cost on the final iteration.
At the beginning of your end step, each Biovisionary you control triggers.
Resolve the first trigger, causing you to win the game.
By leveraging Orvar, the All-Form's triggered ability whenever you cast an instant or sorcery targeting your own permanents, you can rapidly populate the board with duplicate threats. Mind Games provides the ideal repeatable target for this engine, thanks to its buyback cost that allows it to return directly to your hand for the next iteration. Once you have successfully multiplied your copies, the passive win condition on Biovisionary triggers at the beginning of your end step to seal the victory instantly.