Activate Sigiled Starfish by tapping it, causing you to scry 1.
Matoya triggers, causing you to draw a card.
Activate Mind Over Matter by discarding a card, untapping Sigiled Starfish
Repeat.

Infinite self-discard triggers

Infinite draw triggers

Infinite looting

Matoya, Archon Elder

Mind Over Matter

Sigiled Starfish

Activate Sigiled Starfish by tapping it, causing you to draw a card due to Eligeth.
Activate Mind Over Matter by discarding a card, untapping Sigiled Starfish.
Repeat.

Eligeth, Crossroads Augur

Activate a creature by tapping it, adding at least {1}.
Activate Sigiled Starfish by tapping it, causing you to scry 1.
Matoya triggers, causing you to draw a card.
Nadir Kraken triggers, causing you to pay {1} to put a +1/+1 counter on it and create a 1/1 Tentacle creature token.
When the Tentacle enters the battlefield, Intruder Alarm triggers, untapping all creatures.
Repeat.

Near-infinite ETB

Near-infinite creature tokens

Near-infinite untap of creatures

Near-infinite +1/+1 counters on a creature

Nadir Kraken

Intruder Alarm

Activate Sigiled Starfish by tapping it, causing you to scry 1.
Matoya triggers, causing you to draw a card.
The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
When the Insect enters the battlefield, Intruder Alarm triggers, untapping all creatures.
Repeat.

Near-infinite creature tokens with haste

The Locust God

Activate Sigiled Starfish by tapping it, causing you to draw a card due to Eligeth.
The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
When the Insect enters the battlefield, Intruder Alarm triggers, untapping all creatures.
Repeat.

Combos with "Sigiled Starfish"