Scouring Swarm, Drownyard Temple, Ashnod's Altar, and Coastal Hornclaw

Prerequisites

• Scouring Swarm on the battlefield
• Drownyard Temple on the battlefield
• Ashnod's Altar on the battlefield
• Coastal Hornclaw on the battlefield
• available

Steps

1. Activate Coastal Hornclaw by sacrificing Drownyard Temple
2. Each Scouring Swarm you control triggers, creating a tapped token copy of itself
3. Resolve the Coastal Hornclaw ability
4. If you control four or more Scouring Swarms, activate Ashnod's Altar by sacrificing a Scouring Swarm, adding
5. Repeat step 4 until you control three Scouring Swarms or until you have available, whichever comes first
6. Activate Drownyard Temple by paying , returning it from your graveyard to the battlefield
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite tapped creature tokens
• Infinite landfall triggers