Lonis, Genetics Expert, Tarrian's Soulcleaver, and Grinding Station

Prerequisites

• Lonis, Genetics Expert on the battlefield
• Tarrian's Soulcleaver on the battlefield
• Grinding Station on the battlefield
• You control at least one Clue
• Tarrian's Soulcleaver attached to Lonis

Steps

1. Activate Grinding Station by tapping it and sacrificing a Clue
2. Lonis' second ability and Tarrian's Soulcleaver trigger
3. Resolve the Lonis trigger, putting a +1/+1 counter on any other creature you control
4. Resolve the Tarrian's Soulcleaver trigger, putting a +1/+1 counter on Lonis
5. Lonis' first ability triggers, creating a Clue artifact token
6. When the Clue enters the battlefield, Grinding Station triggers, untapping Grinding Station
7. Resolve the Grinding Station ability from step 1, causing target player to mill three cards
8. Repeat

Results

• Infinite +1/+1 counters
• Infinite mill
• Infinite self-mill