|"The Core", |"Matzalantli, la Grande porte", |"The Lost Caverns of Ixalan" (2)
Choose one —
• Search your library for a basic Forest card, put that card onto the battlefield tapped, then shuffle.
• Return target Cave card from your graveyard to the battlefield tapped.
(Transforms from Matzalantli.)
Fathomless descent — : Add X mana of any one color, where X is the number of permanent cards in your graveyard.
Gatherer works better in the Companion app!