Arachne, Psionic Weaver, Spider-Man, Web-Slinger, and Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

Prerequisites

• Arachne, Psionic Weaver in hand
• Spider-Man, Web-Slinger on the battlefield
• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield

Steps

1. Cast Arachne for its web-slinging cost by tapping Spider-Man due to Arachne's convoke ability and returning Spider-Man from the battlefield to your hand
2. Cast Spider-Man for its web-slinging cost by tapping Arachne due to Spider-Man's convoke ability and returning Arachne from the battlefield to your hand
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite storm count