Gretchen Titchwillow + Oboro Breezecaller + Uthros, Titanic Godcore

Gretchen Titchwillow

Oboro Breezecaller

Uthros, Titanic Godcore

How it works

1. Activate Uthros by paying tapping it, adding at least six .
2. Activate a land that enters untapped by tapping it, adding at least .
3. Activate Oboro Breezecaller by paying 2 and returning the land that taps for from the battlefield to your hand, untapping Uthros
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 delightful loop hinges on Gretchen Titchwillow providing the engine to continually draw cards and drop lands into play, while Oboro Breezecaller handles the logistical heavy lifting by returning those lands to your hand to untap your mana sources. The engine is fueled by Uthros, Titanic Godcore, which taps for an abundance of blue mana thanks to its station ability and artifact count, letting you easily pay the activation costs needed to keep the cycle spinning.