You had a permanent leave the battlefield this turn.
Steps
Activate Saffi by sacrificing it, targeting
Renegade Rallier.
Activate
Evereth by sacrificing
Renegade Rallier.
When
Renegade Rallier dies, Saffi triggers, returning
Renegade Rallier from your graveyard to the battlefield.
When
Renegade Rallier enters, it triggers, returning Saffi from your graveyard to the battlefield.
Resolve the
Evereth ability.
Repeat.
Notes
If you have a way to kill
Evereth and ({1} magic symbol) ({BR} magic symbol) 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 death triggers.
Infinite damage.
Metadata
In 1 deck according to EDHREC.
Bracket Tag
This combo has been estimated to be Spicy (Bracket 3-4+).