Biovisionary + Echo Mage + Twinflame

Biovisionary

Echo Mage

Twinflame

How it works

1. Cast Twinflame by paying its mana cost, targeting Biovisionary.
2. Holding priority, activate Echo Mage by tapping it, copying Twinflame twice, with both copies targeting Biovisionary.
3. Resolve all Twinflame spells, creating three token copies of Biovisionary.
4. At the beginning of your end step, each Biovisionary triggers. Resolve the first trigger, causing you to win the game.

This clever finishing move relies on Echo Mage at Level 4+, whose tapped ability lets you copy a spell twice so you can turn a single targeted spell into a flurry of replicas. By casting Twinflame with strive to target Biovisionary, you set up the original spell to be multiplied on the stack. The resulting token copies, combined with your original Biovisionary, immediately satisfy the win condition at the beginning of your end step.