Nim Deathmantle + Krark-Clan Ironworks + Weapons Manufacturing

Nim Deathmantle

Krark-Clan Ironworks

Weapons Manufacturing

How it works

1. Activate Krark-Clan Ironworks by sacrificing any nontoken artifact creature, adding CC.
2. When the creature dies, Nim Deathmantle triggers, causing you to pay 4 to return the creature from your graveyard to the battlefield.
3. When the creature enters, Weapons Manufacturing triggers, creaitng a Munitions token.
4. Activate Krark-Clan Ironworks by sacrificing the Munitions token, adding CC.
5. The Munitions tokens triggers, dealing 2 damage to any target.
6. Repeat.

This brilliant loop uses Krark-Clan Ironworks as both the engine and the altar, converting your sacrifices into the colorless mana needed to keep the cycle spinning. Whenever your sacrificed creature returns via Nim Deathmantle's triggered ability, Weapons Manufacturing steps in to generate a Munitions token on entry, providing the exact nontoken artifact sacrifice fodder required to fuel the Ironworks' mana ability. By continually feeding these Munitions tokens to the Ironworks and letting them trigger their leave-the-battlefield damage, you turn a simple mechanical loop into an infinite storm of damage and triggers.