Activate Ashnod's Altar by sacrificing Eternal Witness, adding CC.
When Eternal Witness dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
Activate the Treasure by tapping and sacrificing it, adding .
Activate Doomed Necromancer by paying , tapping it and sacrificing it.
When Doomed Necromancer dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
Resolve the Doomed Necromancer ability, returning Eternal Witness from your graveyard to the battlefield.
When Eternal Witness enters the battlefield, it triggers, returning Doomed Necromancer from your graveyard to your hand.
Activate a Treasure by tapping and sacrificing it, adding .
Cast Doomed Necromancer by paying 2.
Repeat.
This ingenious loop relies on a clever cycle of recycling where Ashnod's Altar provides the colorless mana to feed our engine while sacrificing creatures to keep the graveyard stocked. Pitiless Plunderer acts as the linchpin, turning every single creature death into a fresh Treasure token to fund our black mana requirements. Doomed Necromancer continually reaches into the graveyard to pull back Eternal Witness, which in turn returns the Necromancer right back to our hand upon entering the battlefield. Meanwhile, Tuktuk Rubblefort passively grants haste to everything we control, ensuring our key players can tap immediately without skipping a beat.