Cauldron of Souls + Dross Scorpion + Arsenal Thresher + Sarcatog

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 Sarcatog's second ability 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 Sarcatog ability, giving it +1/+1 until end of turn.
7. 7Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinitely large creature until end of turn