Name:Artificial Evolution
ManaCost:U
Types:Instant
A:SP$ ChangeText | Cost$ U | ValidTgts$ Card | TgtZone$ Stack,Battlefield | TgtPrompt$ Choose target spell or permanent | ChangeTypeWord$ ChooseCreatureType ChooseCreatureType | ForbiddenNewTypes$ Wall | Duration$ Permanent | SpellDescription$ Change the text of target spell or permanent by replacing all instances of one creature type with another. The new creature type can't be Wall. (This effect lasts indefinitely.)
Oracle:Change the text of target spell or permanent by replacing all instances of one creature type with another. The new creature type can't be Wall. (This effect lasts indefinitely.)