Fiend Hunter enters, its first ability triggers, exiling
Karmic Guide.
Activate
Evereth by sacrificing
Fiend Hunter.
When
Fiend Hunter dies, its second ability triggers, returning
Karmic Guide from exile to the battlefield.
When
Karmic Guide enters, it triggers, returning
Fiend Hunter from your graveyard to the battlefield.
When
Fiend Hunter enters, its first ability triggers, exiling
Karmic Guide.
Resolve the
Evereth ability.
Repeat from step 3.
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
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.