Biovisionary + Finale of Promise + Quasiduplicate

Biovisionary

Finale of Promise

Quasiduplicate

How it works

1. Cast Finale of Promise by paying 10, causing you to cast Quasiduplicate from your graveyard without paying its mana cost and copying it twice, with all spells targeting Biovisionary.
2. Resolve all Quasiduplicates, 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.