Activate Marvin using Ulvenwald Abomination's ability by tapping it, adding {C}{C}.
Activate Marvin using Pili-Pala's ability by paying {2} and untapping it, adding one mana of any color.
Repeat.

Infinite colored mana

Infinite colorless mana

Marvin, Murderous Mimic

Pili-Pala

Ulvenwald Captive // Ulvenwald Abomination

Activate Ulvenwald Abomination by tapping it, adding {C}{C}.
Activate Arcanis's first ability by tapping it, causing you to draw three cards.
Tolarian Kraken triggers three times. Resolve the first two triggers, causing you to pay {2} to untap Arcanis and Ulvenwald Abomination.
Resolve the last Tolarian Kraken trigger, choosing not to pay.
Repeat.

Infinite card draw

Infinite draw triggers

Arcanis the Omnipotent

Tolarian Kraken

Activate Ulvenwald Abomination by tapping it, adding {C}{C}.
Activate Sword of the Paruns by paying {1}, untapping Ulvenwald Abomination.
Repeat.

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Sword of the Paruns

Power Artifact

Combos with "Ulvenwald Captive // Ulvenwald Abomination"