Mortuary + Pitiless Plunderer + Grimgrin, Corpse-Born + Realmwalker

Mortuary

Pitiless Plunderer

Grimgrin, Corpse-Born

Realmwalker

How it works

1. Activate Grimgrin by sacrificing the nontoken creature.
2. When the creature dies, Mortuary and Pitiless Plunderer trigger.
3. Resolve the Mortuary trigger, putting the creature from your graveyard onto the top of your library.
4. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
5. Resolve the Grimgrin ability.
6. Activate the Treasure by tapping and sacrificing it, adding one mana of any color.
7. Cast the creature from the top of your library by paying its mana cost
8. Repeat.

This clever loop turns your graveyard into a revolving door for your creatures, completely fueled by the synergy between Grimgrin, Corpse-Born and Mortuary. By sacrificing a creature to Grimgrin, you trigger Pitiless Plunderer to generate a Treasure token while Mortuary immediately recycles the fallen creature back to the top of your library. From there, Realmwalker lets you look at the top of your deck and continuously recast that creature using the mana from the sacrificed Treasure. You can repeat this loop as many times as you like, growing Grimgrin indefinitely while farming an endless stream of artifact and creature triggers.