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

Gretchen Titchwillow

Oboro Breezecaller

Matzalantli, the Great Door // The Core

How it works

1. Activate The Core by tapping it, adding at least or .
2. Activate a land that enters untapped by tapping it, adding at least G/U.
3. Activate Oboro Breezecaller by paying 2 and returning the land that taps for G/U from the battlefield to your hand, untapping The Core.
4. Activate Gretchen by paying 2, causing you to draw a card and put the land from step 3 onto the battlefield.
5. Repeat.

This clever loop harnesses the immense mana generation of Matzalantli, the Great Door // The Core to fuel a continuous cycle of land drops and card draw. By tapping The Core for a massive pool of mana, you can pay for Oboro Breezecaller's ability to bounce and replay your lands, simultaneously untapping The Core to keep the energy flowing. Gretchen Titchwillow ties the whole engine together by converting that floating mana and bouncing your lands into repeatable card advantage and guaranteed land deployment.