All permanents in hand or on the battlefield or in exile (Exiled by the creature on the battlefield).
Easy Prerequisites
Lumbering Battlement must be exiled by
Abdel Adrian, and
Worldgorger Dragon must begin in hand.
(This starting order is not fixed, and their initial positions may be interchanged as necessary.).
Mana Needed
plus the mana cost of the creature in your hand available.
Steps
Cast
Worldgorger Dragon for its mana cost.
When
Worldgorger Dragon enters, it exiles
Abdel Adrian until
Worldgorger Dragon leaves the battlefield. Resolve any additional effects of
Worldgorger Dragon's ETB.
When
Abdel Adrian leaves the battlefield,
Lumbering Battlement is returned from exile to the battlefield.
When
Lumbering Battlement enters, it exiles
Worldgorger Dragon until
Lumbering Battlement leaves the battlefield. Resolve any additional effects of
Lumbering Battlement's ETB.
When
Worldgorger Dragon leaves the battlefield,
Abdel Adrian is returned from exile to the battlefield.
When
Abdel Adrian enters, it exiles
Lumbering Battlement until
Abdel Adrian leaves the battlefield. Resolve any additional effects of
Abdel Adrian's ETB.
When
Lumbering Battlement leaves the battlefield,
Worldgorger Dragon is returned from exile to the battlefield.
Repeat from step 2.
Notes
Due to differences in card templating between the various banisher effects (linked triggered abilities vs "until" clause), steps 3, 5, and 7 may return the creature to the battlefield during the resolution of the preceding step rather than creating a separate event. This should not affect the overall execution of the combo, only how many objects pass through the stack (and thus rounds of priority available per loop).
Results
Infinite blinking of nonland permanents.
Infinite creature ETB.
Infinite creature LTB.
Infinite blinking of permanents.
Infinite mana lands you control can produce.
Metadata
Bracket tag
SpicyBracket 3-4+
Probably 3 or 4, but hard to classify
1
2
3
4
5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.