Lumbering Battlement token enters the battlefield, it triggers, exiling
Kiki-Jiki until
Lumbering Battlement leaves the battlefield.
Activate
Evereth by sacrificing the
Lumbering Battlement token.
When the
Lumbering Battlement token dies,
Kiki-Jiki is returned from exile to the battlefield.
Resolve the
Evereth ability.
Repeat.
Notes
If you have a way to kill
Evereth and available, you can do so after putting a significant amount of +1/+1 counters on it to deal damage to each opponent using its second ability.
Results
Infinite +1/+1 counters on a creature.
Infinite creature ETB.
Infinite creature LTB.
Infinite creature sacrifice triggers.
Infinite death triggers.
Infinite damage.
Metadata
Bracket tag
OddballBracket 2-3+
Probably 2 or 3, 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.