Umbral Collar Zealot + Dualcaster Mage + Feign Death

Umbral Collar Zealot

Dualcaster Mage

Feign Death

How it works

1. Cast Feign Death by paying its mana cost.
2. Holding priority, cast Dualcaster Mage by paying its mana cost.
3. When Dualcaster Mage enters, it triggers, copying Feign Death, with the copy targeting Dualcaster Mage.
4. Resolve the copy of Feign Death.
5. Holding priority, activate Umbral Collar Zealot by sacrificing Dualcaster Mage.
6. When Dualcaster Mage dies, it triggers, returning it from your graveyard to the battlefield.
7. Repeat from step 3.
8. Resolve all Umbral Collar Zealot abilities from step 5.

This clever loop turns Dualcaster Mage into an immortal spell-copying engine by combining its own entry trigger with the recursion of Feign Death. When Dualcaster Mage enters and targets the initial Feign Death copy, it sets up a permanent feedback loop where sacrificing the Mage to Umbral Collar Zealot triggers its return to the battlefield with a +1/+1 counter. Because Umbral Collar Zealot only requires you to sacrifice an artifact or creature to surveil, every single iteration of this cycle feeds you endless surveil triggers alongside your infinite enters-the-battlefield, death, and magecraft events.