Feldon of the Third Path + Worldgorger Dragon + Illusionist's Bracers + Frostcliff Siege

Feldon of the Third Path

Worldgorger Dragon

Illusionist's Bracers

Frostcliff Siege

How it works

1. Activate any number of permanents by tapping them, adding at least 2.
2. Activate Feldon by paying 2 and tapping it, targeting Worldgorger Dragon.
3. Illusionist's Bracers triggers, 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.

By equipping Feldon of the Third Path with Illusionist's Bracers, his activated ability is doubled, allowing you to create two Worldgorger Dragon tokens simultaneously from your graveyard. The first token enters the battlefield and exiles all your other permanents—including Feldon and the Bracers—which immediately triggers Worldgorger Dragon's leaves-the-battlefield ability to return everything. This creates an infinite loop where Frostcliff Siege and your other permanents continuously blink in and out of play, generating endless enters-and-leaves-the-battlefield triggers alongside infinite mana from any lands or permanents you control.