Gretchen Titchwillow + Oboro Breezecaller + Matzalantli, the Great Door // The Core Combo

All permanents on the battlefield.

You control a land that enters the battlefield untapped and can tap to produce at least .

You have at least five permanent cards in your graveyard.

Activate The Core by tapping it, adding at least or .

Activate a land that enters untapped by tapping it, adding at least .

Activate Oboro Breezecaller by paying and returning the land that taps for from the battlefield to your hand, untapping The Core.

Activate Gretchen by paying , causing you to draw a card and put the land from step 3 onto the battlefield.

Repeat.

Infinite card draw

Infinite draw triggers

Significant landfall triggers