Sun Titan + Phyrexian Altar + Gift of Immortality

Sun Titan

Phyrexian Altar

Gift of Immortality

How it works

1. Activate Phyrexian Altar by sacrificing Sun Titan.
2. When Sun Titan dies, Gift of Immortality triggers, returning Sun Titan from your graveyard to the battlefield.
3. When Sun Titan enters, it triggers, returning Gift of Immortality from your graveyard to the battlefield attached to Sun Titan.
4. Repeat.

This elegant loop hinges on Sun Titan wearing Gift of Immortality to create a self-sustaining cycle of resurrection. When you feed Sun Titan to Phyrexian Altar for any color of mana, Gift of Immortality triggers to bring the Titan right back to the battlefield. That new entry triggers Sun Titan's ability to pull Gift of Immortality straight out of your graveyard and attach it right back to the Titan, resetting the entire engine.