Requires

Lilysplash Mentor must be on the battlefield. Cloud of Faeries must be on the battlefield. Matzalantli, the Great Door // The Core must be on the battlefield (on the battlefield as The Core). You have at least three permanent cards in your graveyard. Mana needed:

Steps

1. Activate The Core by tapping it, adding at least or .
2. If desired, activate another mana producing land by tapping it, adding at least .
3. Activate Lilysplash Mentor by paying , blinking Cloud of Faeries.
4. When Cloud of Faeries enters the battlefield, it triggers, untapping The Core and up to one other mana-producing land.
5. Repeat.

Results