Artifact Castable for that survives in hand or on the battlefield or in your library (on top of your library).
All other permanents on the battlefield.
Steps
Sacrifice the templated artifact.
Resolve the ability of your sacrifice outlet.
Remove a +1/+1 counter from
Arcbound Reclaimer, putting the artifact on top of your library.
Your leaves-the-graveyard effect triggers, putting a +1/+1 counter on
Arcbound Reclaimer.
Cast the templated artifact for 0 life through
Bolas's Citadel.
Repeat.
Notes
This combo will only result in creature ETB/LTB/etc. if the chosen card from the template is an artifact creature, in which case creature-specific sacrifice outlets may also be used.
For artifacts from the template that can sacrifice themselves, the free sacrifice outlet is unnecessary.
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 artifact ETB.
Infinite artifact LTB.
Infinite artifact sacrifice triggers.
Infinite creature ETB.
Infinite creature LTB.
Infinite creature sacrifice triggers.
Infinite damage.
Infinite storm count.
Metadata
Bracket tag
PowerfulBracket 3+
For strong decks in bracket 3+
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.