Cauldron of Souls + Dross Scorpion + Arsenal Thresher + Ashnod's Altar

Prerequisites

• You have at least one artifact card in hand.
• Arsenal Thresher does not have a -1/-1 counter on it.

Steps

1. 1Activate Cauldron of Souls by tapping it, giving Arsenal Thresher persist until end of turn.
2. 2Activate Ashnod's Altar by sacrificing Arsenal Thresher, adding .
3. 3When Arsenal Thresher dies, its persist ability and Dross Scorpion trigger.
4. 4Resolve the Dross Scorpion trigger, untapping Cauldron of Souls.
5. 5Resolve the Arsenal Thresher trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it, and then choosing to reveal at least one artifact card from your hand to remove the -1/-1 counter.
6. 6Repeat.

Effects

• Infinite colorless mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers