Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Aquastrand Spider, and Genesis Chamber

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Aquastrand Spider on the battlefield
• Genesis Chamber on the battlefield

Steps

1. Kill Aquastrand Spider
2. When Aquastrand Spider dies, its persist ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it due to its graft ability
3. When Aquastrand Spider enters, Genesis Chamber triggers, creating a creature token
4. When the creature token enters, Aquastrand Spider triggers, moving a +1/+1 counter from it to the creature token
5. Aquastrand Spider dies as a state-based action due to having 0 toughness
6. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite death triggers
• Infinite creature tokens