Sun Titan + Umbral Collar Zealot + Unholy Indenture

Sun Titan

Umbral Collar Zealot

Unholy Indenture

How it works

1. Activate Umbral Collar Zealot by sacrificing Sun Titan.
2. When Sun Titan dies, Unholy Indenture triggers, returning Sun Titan from your graveyard to the battlefield.
3. When Sun Titan enters, it triggers, returning Unholy Indenture from your graveyard to the battlefield attached to Sun Titan.
4. Resolve the Umbral Collar Zealot ability.
5. Repeat.

This clever loop turns your graveyard into a revolving door by exploiting the seamless synergy between Sun Titan, Unholy Indenture, and Umbral Collar Zealot. When you sacrifice Sun Titan to Umbral Collar Zealot, Unholy Indenture steps in upon its death to instantly return the Titan to the battlefield. That new entry triggers Sun Titan's ability to pull Unholy Indenture right back out of the graveyard and attach it to itself, ready to repeat the entire cycle and fuel an infinite stream of enter-the-battlefield, death, and surveil triggers.