Activate Mary Read and Anne Bonny by tapping it, causing you to draw a card and discard Gilded Assault Cart.
Mary Read and Anne Bonny triggers, creating two tapped Treasure tokens.
When the Treasures enter the battlefield, Transplant Theorist triggers twice.
Resolve the first trigger, choosing not to draw a card.
Holding priority, activate Gilded Assault Cart by sacrificing two Treasures, returning Gilded Assault Cart from your graveyard to your hand.
Resolve the second Transplant Theorist trigger, causing you to draw a card and discard Gilded Assault Cart.
Repeat from step 2.

Infinite card draw

Infinite self-discard triggers

Infinite draw triggers

Infinite looting

Near-infinite tapped Treasure tokens

Mary Read and Anne Bonny

Gilded Assault Cart

Xorn

Transplant Theorist

Activate Mary Read and Anne Bonny by tapping it, causing you to draw a card and discard Gilded Assault Cart.
Mary Read and Anne Bonny triggers, creating two tapped Treasure tokens.
When the Treasures enter the battlefield, Skyswimmer Koi triggers twice.
Resolve the first trigger, choosing not to draw a card.
Holding priority, activate Gilded Assault Cart by sacrificing two Treasures, returning Gilded Assault Cart from your graveyard to your hand.
Resolve the second Skyswimmer Koi trigger, causing you to draw a card and discard Gilded Assault Cart.
Repeat from step 2.

Skyswimmer Koi

Activate Mary Read and Anne Bonny by tapping it, causing you to draw a card and then discard an Island, Pirate or Vehicle card.
The discarded card is put on top of your library instead of into your graveyard due to Library of Leng.
Mary Read and Anne Bonny triggers, creating a tapped Treasure token.
When the Treasure enters the battlefield, Transplant Theorist triggers, causing you to draw a card and then discard an Island, Pirate or Vehicle card.
Repeat from step 2.

Infinite tapped Treasure tokens

Library of Leng

Activate Mary Read and Anne Bonny by tapping it, causing you to draw a card and then discard an Island, Pirate or Vehicle card.
The discarded card is put on top of your library instead of into your graveyard due to Library of Leng.
Mary Read and Anne Bonny triggers, creating a tapped Treasure token.
When the Treasure enters the battlefield, Skyswimmer Koi triggers, causing you to draw a card and then discard an Island, Pirate or Vehicle card.
Repeat from step 2.

Activate Ghostly Pilferer by discarding Gilded Assault Cart.
Mary Read and Anne Bonny triggers, creating two tapped Treasure tokens.
Resolve the Ghostly Pilferer ability.
Activate Gilded Assault Cart by sacrificing two Treasures, returning Gilded Assault Cart from your graveyard to your hand.
Repeat.

Combos with "Mary Read and Anne Bonny"