Kenrith, the Returned King + Ashnod's Altar + Prismite + Ministrant of Obligation

Kenrith, the Returned King

Ashnod's Altar

Prismite

Ministrant of Obligation

How it works

1. Activate Ashnod's Altar by sacrificing Ministrant of Obligation, adding CC.
2. When Ministrant of Obligation dies, its afterlife ability triggers, creating two 1/1 Spirit creature tokens.
3. Activate Ashnod's Altar twice by sacrificing the Spirits, adding CCCC.
4. Activate Prismite by paying 2, adding .
5. Activate Kenrith's fifth ability by paying 4, returning Ministrant of Obligation to the battlefield from your graveyard.
6. Repeat.

This loop uses Ashnod's Altar as an engine to turn the demise of Ministrant of Obligation into a net surplus of mana and tokens through its Afterlife 2 trigger. Because Prismite bridges the color gap by filtering colorless mana into black, you can easily pay the steep activation cost for Kenrith, the Returned King's final ability. Kenrith uses that black mana to pull Ministrant of Obligation right back out of the graveyard and onto the battlefield, ready to be sacrificed to the Altar once more for an endless cycle of sacrifice, death, and resurrection.