Tarrian's Soulcleaver, Herd Baloth, and Ashnod's Altar

Prerequisites

• Tarrian's Soulcleaver on the battlefield
• Herd Baloth on the battlefield
• Ashnod's Altar on the battlefield
• You have a way to put a +1/+1 counter on Herd Baloth

Steps

1. Put a +1/+1 counter on Herd Baloth
2. Herd Baloth triggers, creating a 4/4 Beast creature token
3. Activate Ashnod's Altar by sacrificing the Beast, adding
4. When the Beast dies, Tarrian's Soulcleaver triggers, putting a +1/+1 counter on Herd Baloth
5. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite +1/+1 counters on Herd Baloth