Glimpse of Nature, Intruder Alarm, and Whitemane Lion

Prerequisites

• Whiteman Lion and Glimpse of Nature in hand
• All other permanents on the battlefield
• Creatures you control can tap to produce at least
• available

Steps

1. Cast Glimpse of Nature by paying , making it so when you cast creature spell, you draw a card
2. Activate all mana-producing creatures you control by tapping them, adding at least
3. Cast Whiteman Lion by paying
4. Glimpse of Nature triggers, causing you to draw a card
5. Whiteman Lion enters the battlefield, triggering Intruder Alarm and Whiteman Lion
6. Resolve the Intruder Alarm's trigger, untapping all creatures you control
7. Resolve the Whiteman Lion's trigger, returning it to your hand
8. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite card draw
• Infinite mana creatures you control can produce