Mayael's Aria + Auriok Bladewarden + Freed from the Real

Mayael's Aria

Auriok Bladewarden

Freed from the Real

How it works

1. At the beginning of your upkeep, Mayael's Aria triggers.
2. Holding priority, activate Auriok Bladewarden by tapping it, giving itself +X/+X until end of turn, where X is its power.
3. Activate Freed from the Real's second ability by paying , untapping Auriok Bladewarden.
4. Repeat from step 2 until Auriok Bladewarden has power nineteen or greater, omitting step 3 on the final iteration.
5. Resolve the Mayael's Aria trigger from step 1, causing you to put a +1/+1 counter on each creature you control, gain 10 life and win the game.

This delightful loop centers on Auriok Bladewarden, whose tap ability scales exponentially by targeting itself to continuously double its own power. By enchanting it with Freed from the Real, you can funnel blue mana into repeatedly untapping the Bladewarden, pumping its power past twenty before the stack ever needs to resolve. Once your creature is monstrously huge, you simply let Mayael's Aria resolve during your upkeep to fulfill its life-gain and counter requirements and instantly claim victory.