Banishing Knack, and Midnight Guard

Prerequisites

• Banishing Knack in hand
• Midnight Guard on the battlefield
• available

Steps

1. Cast Banishing Knack by paying , targeting Midnight Guard
2. Activate Midnight Guard by tapping it, returning the creature that costs no mana from the battlefield to your hand
3. Cast that creature by paying
4. When that creature enters, Midnight Guard triggers, untapping Midnight Guard
5. Repeat from step 2

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite creature ETB
• Infinite creature LTB
• Infinite storm count