Spawning Pit + Dualcaster Mage + Sevinne's Reclamation

Spawning Pit

Dualcaster Mage

Sevinne's Reclamation

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 Spawning Pit 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 graveyard spell into a self-sustaining engine by exploiting Dualcaster Mage's reflexive entry trigger and the sacrifice mechanics of Spawning Pit. When you cast Sevinne's Reclamation from your hand and float the Dualcaster Mage to copy it, you set up an eternal recursive loop where the mage continuously resurrects itself from the graveyard. Along the way, Spawning Pit acts as both the necessary sacrifice outlet to keep the chain moving and an accumulator that banks infinite charge counters, flooding the board with an endless army of Spawn artifact creature tokens.