Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Spawning Pit, and Rampant Rejuvenator

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Spawning Pit on the battlefield
• Rampant Rejuvenator on the battlefield

Steps

1. Activate Spawning Pit by sacrificing Rampant Rejuvenator
2. When Rampant Rejuvenator dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its replacement effect
3. Resolve the Spawning Pit ability
4. Repeat

Results

• Infinite charge counters on a permanent
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Near-infinite landfall triggers
• Put all basic lands from your library onto the battlefield