Initial Card State
- All permanents on the battlefield.
Notable Prerequisites
- You have at least one artifact card in hand.
- Arsenal Thresher does not have a -1/-1 counter on it.
Steps
- Activate Cauldron of Souls by tapping it, giving Arsenal Thresher persist until end of turn.
- Activate Grinding Station by tapping it and sacrificing Arsenal Thresher.
- When Arsenal Thresher dies, its persist ability and Dross Scorpion trigger.
- Resolve the Dross Scorpion trigger, untapping Cauldron of Souls.
- Resolve 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.
- When Arsenal Thresher enters the battlefield, Grinding Station triggers, untapping Grinding Station.
- Resolve the Grinding Station ability from step 2, causing target player to mill three cards.
- Repeat.
Results
- Infinite LTB.
- Infinite ETB.
- Infinite sacrifice triggers.
- Infinite death triggers.
- Infinite mill.
- Infinite self-mill.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).