Activate Ashnod's Altar by sacrificing Ebondeath, adding CC.
When Ebondeath dies, Pitiless Plunderer triggers, creating a Treasure token.
Activate the Treasure token by tapping and sacrificing it, adding .
Cast Ebondeath from your graveyard by paying 2.
Quintorius, History Chaser triggers, creating a creature token.
Activate Ashnod's Altar by sacrificing the creature token, adding CC.
When the creature token dies, Pitiless Plunderer triggers, creating a Treasure token.
Activate the Treasure token by tapping and sacrificing it, adding .
Repeat.
This clever loop turns the death and rebirth of Ebondeath, Dracolich into an infinite engine by leveraging a few key synergistic permanents. Ashnod's Altar provides the initial sacrifice outlet to feed the loop, while Pitiless Plunderer generates a Treasure token every time a creature bites the dust to help fund Ebondeath's recurring casting cost from the graveyard. Meanwhile, Quintorius, History Chaser watches cards leave your yard, turning every resurrection of the Dracolich into a brand-new 3/2 Spirit creature token that can be immediately sacrificed back to Ashnod's Altar for even more mana.