Dualcaster Mage + Sevinne's Reclamation + Phantom Train

Dualcaster Mage

Sevinne's Reclamation

Phantom Train

How it works

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

This ingenious loop turns a modest recursion spell into an infinite engine by using Dualcaster Mage to continuously copy itself right back out of the graveyard. When you cast Sevinne's Reclamation from your hand, Dualcaster Mage leaps in with flash to copy it, targeting the mage itself with the resulting copy. Before the stack can resolve, Phantom Train steps in to sacrifice Dualcaster Mage to its own ability, feeding you a steady stream of death and sacrifice triggers while fueling the train's own growth with +1/+1 counters. The resolving Sevinne's Reclamation copy then pulls Dualcaster Mage straight back from the graveyard to the battlefield, ready to restart the cycle and repeat the magic indefinitely.