At the beginning of your end step, if eight or more cards are in your graveyard, transform this enchantment
Cards Between $5-10 The Fire Crystal Sword of the Animist Three Visits Primeval Titan Yuna, Grand Summoner Dark Confidant The Wind Crystal Jodah, the Unifier Genji Glove Nibelheim Aflame Loran of the Third Path Cryptic Command Aettir and Priwen Walking Ballista Command Beacon Tifa, Martial Artist The Earth Crystal Reanimate Y'shtola Rhul Ultima Weapon Cards Between $10-15 Dark Ritual Isshin, Two Heavens as One Tymna the Weaver Azusa, Lost but Seeking Diabolic Intent Vial Smasher the Fierce Lightning, Army of One Summon: Knights of the Round Kinnan, Bonder Prodigy Starting Town Final Fantasy Promos, Alternate Art, and More Final Fantasy is chock-full of alternate versions, with most characters having two versions, 10 of them having three and Cid, Timeless Artificer having 15
This can happen one of two ways: (1) the door becomes unlocked on the battlefield or (2) the door becomes unlocked as the Room enters the battlefield because you cast the corresponding half
This makes it a risky bet in the format right now, especially with how the current top decks are looking
This is a four-mana White Enchantment with landfall, which means something happens when you a Land enters the battlefield under your control