Sakashima of a Thousand Faces from your graveyard to the battlefield as a copy of
Havi.
Resolve the
Sakashima of a Thousand Faces trigger, returning any legendary creature card with mana value 5 or less 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 creature sacrifice triggers.
Infinite death triggers.
Return some creature cards from your graveyard to the battlefield.
Infinite damage.
Metadata
In 1 deck according to EDHREC.
Bracket Tag
This combo has been estimated to be Spicy (Bracket 3-4+).