Biovisionary + Thunderclap Drake + Croaking Counterpart

Biovisionary

Thunderclap Drake

Croaking Counterpart

How it works

1. Activate Thunderclap Drake by paying 2 and sacrificing it.
2. Cast Croaking Counterpart by paying its mana cost, targeting Biovisionary.
3. Thunderclap Drake triggers, copying Croaking Counterpart at least twice, with all copies targeting Biovisionary.
4. Resolve all Croaking Counterpart spells, creating at least three copies of Biovisionary.
5. At the beginning of your end step, each Biovisionary triggers, causing you to win the game.