Electric Seaweed, Vigor, and Basking Broodscale

Prerequisites

• Electric Seaweed in hand
• Vigor on the battlefield
• Basking Broodscale 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 Basking Broodscale, which will instead put a +1/+1 counter on it due to Vigor
4. Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token
5. Activate the Eldrazi Spawn by sacrificing it, adding
6. When the Eldrazi Spawn 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. Repeat from step 4

Results

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