Inverter of Truth + Thassa's Oracle + Ulamog, the Infinite Gyre

Inverter of Truth

Thassa's Oracle

Ulamog, the Infinite Gyre

How it works

1. Discard Ulamog if it is in your hand, or kill it if it is on the battlefield.
2. Ulamog triggers, shuffling your graveyard into your library.
3. Cast Inverter of Truth by paying 2.
4. When Inverter of Truth enters the battlefield, it triggers, exiling your library.
5. Cast Thassa's Oracle by paying .
6. When Thassa's Oracle enters the battlefield, it triggers, causing you to win the game.

This clever sequence weaponizes Inverter of Truth's drastic entry trigger by first priming your graveyard with Ulamog, the Infinite Gyre, whose mandatory replacement effect allows you to safely shuffle your library before it gets exiled face down. With your library reduced to zero cards, casting Thassa's Oracle is all it takes to trigger an instant win condition, as your devotion to blue will easily outnumber the empty contents of your library.