Feldon of the Third Path, Worldgorger Dragon, The Peregrine Dynamo, and Fervor

Prerequisites

• Feldon of the Third Path on the battlefield
• Worldgorger Dragon in the graveyard
• The Peregrine Dynamo on the battlefield
• Fervor on the battlefield

Steps

1. Activate any number of permanents by tapping them, adding at least
2. Activate Feldon by paying and tapping it, targeting Worldgorger Dragon
3. Holding priority, activate The Peregrine Dynamo by paying and tapping it, copying Feldon's ability targeting Worldgorger Dragon
4. Resolve the copy of Feldon's ability, creating a token copy of Worldgorger Dragon
5. When the Worldgorger Dragon token enters, its first ability triggers, exiling all other permanents you control
6. Resolve the Feldon ability from step 2, creating a token copy of Worldgorger Dragon
7. When the Worldgorger Dragon token enters, its first ability triggers, exiling all other permanents you control
8. When the Worldgorger Dragon token created in step 4 leaves the battlefield, its second ability triggers, returning all cards exiled with it to the battlefield
9. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite landfall triggers
• Infinite blinking of permanents you control
• Infinite mana permanents you control that enter the battlefield untapped can produce