Blade of the Bloodchief, Herd Baloth, and Phyrexian Altar

Prerequisites

• Blade of the Bloodchief on the battlefield
• Herd Baloth on the battlefield
• Phyrexian Altar on the battlefield
• Blade of the Bloodchief attached to Herd Baloth
• You control at least one additional creature

Steps

1. Activate Phyrexian Altar by sacrificing another creature, adding one mana of any color
2. When the creature dies, Blade of the Bloodchief triggers, putting a +1/+1 counter on Herd Baloth
3. Herd Baloth triggers, creating a 4/4 Beast creature token
4. Repeat

Results

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