Dualcaster Mage + Phantom Train + Prison Break

Dualcaster Mage

Phantom Train

Prison Break

How it works

1. Cast Prison Break either from your hand by paying 4 or from your graveyard for its mayhem cost by paying 3, targeting any applicable target.
2. Holding priority, cast Dualcaster Mage by paying its mana cost.
3. When Dualcaster Mage enters, it triggers, targeting Prison Break.
4. Holding priority, activate Phantom Train by sacrificing Dualcaster Mage.
5. Resolve the Dualcaster Mage trigger, copying Prison Break, with the copy targeting Dualcaster Mage
6. Resolve the Prison Break copy, returning Dualcaster Mage from your graveyard to the battlefield.
7. Repeat from step 3.

This intricate loop harnesses a clever recursive rescue mission to generate an infinite storm of creature triggers. By casting Prison Break, you set up a target in the graveyard before flashing in Dualcaster Mage to copy the spell, targeting the Mage itself. Before the copy resolves, you feed Dualcaster Mage to Phantom Train's activation cost, sending the Mage to the graveyard so it becomes a legal target to be immediately returned to the battlefield by the resolving Prison Break copy. Each time Dualcaster Mage re-enters, it triggers to copy Prison Break all over again, while Phantom Train's ability can even absorb the redundant sacrifices to grow massive with +1/+1 counters.