Nothing lives within it, yet there is life.

Zoetic Cavern

{T}: Add {C}.
Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Murders at Karlov Manor Commander

The List

Masters 25

{T}: Add {C} to your mana pool.
Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Commander Anthology

Commander 2015

{T}: Add {1} to your mana pool.
Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

If Blood Moon is on the battlefield and a player controls a face-down Zoetic Cavern, it can't be turned face up since it won't have a morph cost.

When Zoetic Cavern is turned face up, any Auras on it that can't legally enchant it will be put into their owners' graveyards. Any Equipment will become unattached and remain on the battlefield. Any counters on it will remain on it.