Ashnod's Altar, Blade of the Bloodchief, Puppeteer Clique, and Putrid Goblin

Prerequisites

• Ashnod's Altar on the battlefield
• Blade of the Bloodchief on the battlefield
• Puppeteer Clique on the battlefield
• Putrid Goblin on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Puppeteer Clique, adding
2. Puppeteer Clique dies, triggering its persist ability and Blade of the Bloodchief
3. Resolve the Puppeteer Clique trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it
4. Puppeteer Clique enters the battlefield, putting target creature from an opponent's graveyard onto the battlefield under your control until end of turn
5. Resolve the Blade of the Bloodchief trigger, putting a +1/+1 counter on Putrid Goblin
6. Equip Blade of the Bloodchief to Puppeteer Clique by paying
7. Activate Ashnod's Altar by sacrificing Putrid Goblin, adding
8. Putrid Goblin dies, triggering its persist ability and Blade of the Bloodchief
9. Resolve Putrid Goblin's trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it
10. Resolve the Blade of the Bloodchief trigger, putting a +1/+1 counter on Puppeteer Clique
11. Equip Blade of the Bloodchief to Putrid Goblin by paying
12. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Put all creatures from each opponent's graveyard onto the battlefield under your control