Banishing Knack, and Sunstrike Legionnaire

Prerequisites

• Banishing Knack in hand
• Sunstrike Legionnaire on the battlefield
• available

Steps

1. Cast Banishing Knack by paying , targeting Sunstrike Legionnaire
2. Activate Sunstrike Legionnaire 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, Sunstrike Legionnaire triggers, untapping Sunstrike Legionnaire
5. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite storm count
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control