Cauldron of Souls + Dross Scorpion + Arsenal Thresher + Arcbound Ravager

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 Arcbound Ravager by sacrificing Arsenal Thresher.
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. 6Resolve the Arcbound Ravager ability, putting a +1/+1 counter on it.
7. 7Repeat.

Effects

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers