Peregrine Drake, Venser, Shaper Savant, and Panharmonicon

Prerequisites

• Peregrine Drake in hand
• Venser, Shaper Savant in hand
• Panharmonicon on the battlefield
• You control lands that can produce at least
• available

Steps

1. Cast Peregrine Drake by paying
2. When Peregrine Drake enters the battlefield, it triggers itself twice due to Panharmonicon
3. Resolve one Peregrine Drake trigger, untapping five lands
4. Activate those lands by tapping them to add at least
5. Resolve the remaining Peregrine Drake trigger, untapping five lands
6. Activate those lands by tapping them to add at least
7. Cast Venser by paying
8. When Venser enters the battlefield, it triggers itself twice due to Panharmonicon, returning itself and Peregrine Drake from the battlefield to your hand
9. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite mana lands you control can produce
• Infinite storm count