Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Phyrexian Altar, and Thopter Squadron

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Phyrexian Altar on the battlefield
• Thopter Squadron on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Thopter Squadron
2. When Thopter Squadron 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. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite colored mana
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite creature tokens