Feldon of the Third Path | Worldgorger Dragon | The Fire Crystal (and one other card)

Cards

Worldgorger Dragon in your graveyard.
All other permanents on the battlefield (
Peter Parker's Camera with a film counter on it).

You control any number of permanents that enter untapped and that can collectively tap to produce at least ({4} magic symbol) ({R} magic symbol) .

Activate any number of permanents by tapping them, adding at least ({4} magic symbol) ({R} magic symbol) .
Activate
Feldon by paying ({2} magic symbol) ({R} magic symbol) and tapping it, targeting
Worldgorger Dragon.
Holding priority, activate
Peter Parker's Camera by paying ({2} magic symbol) , tapping and removing a film counter from it, copying
Feldon's ability targeting
Worldgorger Dragon.
Resolve the copy of
Feldon's ability, creating a token copy of
Worldgorger Dragon.
When the
Worldgorger Dragon token enters, its first ability triggers, exiling all other permanents you control.
Resolve the
Feldon ability from step 2, creating a token copy of
Worldgorger Dragon.
When the
Worldgorger Dragon token enters, its first ability triggers, exiling all other permanents you control.
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.
Repeat.

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

This combo has been estimated to be Exhibition (Bracket 1+).