Activate Bartolomé del Presidio by sacrificing Brotherhood Outcast.
When Brotherhood Outcast dies, Kaya's Ghostform triggers, returning Brotherhood Outcast from your graveyard to the battlefield.
When Brotherhood Outcast enters the battlefield, it triggers, returning Kaya's Ghostform from your graveyard to the battlefield attached to Brotherhood Outcast.
Resolve the Bartolomé del Presidio ability.
Repeat.

Infinite creature LTB

Infinite creature ETB

Infinite creature sacrifice triggers

Infinite death triggers

Infinite +1/+1 counters on a creature

Kaya's Ghostform

Brotherhood Outcast

Bartolomé del Presidio

Cast Animate Dead by paying {1}{B}.
When Animate Dead enters, it trigger, returning Brotherhood Outcast from your graveyard to the battlefield and attaching Animate Dead to it.
When Brotherhood Outcast enters, it triggers, targeting Dance of the Dead.
Holding priority, activate Viscera Seer by sacrificing Brotherhood Outcast.
Resolve the Brotherhood Outcast trigger, returning Dance of the Dead from your graveyard to the battlefield.
When Dance of the Dead enters, it trigger, returning Brotherhood Outcast from your graveyard to the battlefield and attaching Dance of the Dead to it.
When Brotherhood Outcast enters, it triggers, targeting Animate Dead.
Holding priority, activate Viscera Seer by sacrificing Brotherhood Outcast.
Resolve the Brotherhood Outcast trigger, returning Animate Dead from your graveyard to the battlefield.
Repeat from step 2.

Infinite scry 1

Animate Dead

Dance of the Dead

Viscera Seer

Cast Glider Staff by paying {2}{W}.
When Glider Staff enters, it triggers, airbending Brotherhood Outcast
Activate Krark-Clan Ironworks by sacrificing Glider Staff, adding {C}{C}.
Cast Brotherhood Outcast from exile by paying {2}.
When Brotherhood Outcast enters, it triggers, returning Glider Staff from your graveyard to the battlefield.
Repeat from step 2.

Combos with "Brotherhood Outcast"