Name:Transmogrify
ManaCost:3 R
Types:Sorcery
A:SP$ ChangeZone | Cost$ 3 R | ValidTgts$ Creature | Origin$ Battlefield | Destination$ Exile | NoRegen$ True | ValidTgts$ Creature | RememberLKI$ True | TgtPrompt$ Select target creature | SubAbility$ DBDig | SpellDescription$ Exile target creature. That creature's controller reveals cards from the top of their library until they reveal a creature card. That player puts that card onto the battlefield, then shuffles the rest into their library.
SVar:DBDig:DB$ DigUntil | Defined$ RememberedController | Valid$ Creature | ValidDescription$ creature | FoundDestination$ Battlefield | RevealedDestination$ Library | Shuffle$ True
Oracle:Exile target creature. That creature's controller reveals cards from the top of their library until they reveal a creature card. That player puts that card onto the battlefield, then shuffles the rest into their library.