Electric Seaweed, Vigor, Bloodflow Connoisseur, and Herd Baloth

Prerequisites

• Electric Seaweed in hand
• Vigor on the battlefield
• Bloodflow Connoisseur on the battlefield
• Herd Baloth on the battlefield
• available

Steps

1. Cast Electric Seaweed by paying
2. When Electric Seaweed enters, it triggers
3. Activate Electric Seaweed by tapping it, attempting to deal 1 damage to Herd Baloth, which will instead put a +1/+1 counter on it due to Vigor
4. Herd Baloth triggers, creating a creature token
5. Activate Bloodflow Connoisseur by sacrificing the creature token
6. When the creature token dies, Electric Seaweed triggers, dealing 1 damage to each non-Wall creature your opponents control
7. Each non-Wall creature you control (excluding Vigor) will not be dealt damage, and will instead have a +1/+1 counter put on it due to Vigor
8. Herd Baloth triggers, creating a creature token
9. Resolve the Bloodflow Connoisseur ability
10. Repeat from step 5

Results

• Infinite +1/+1 counters on a creature
• Infinite +1/+1 counters on non-Wall creatures you control
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers