Name:Aether Mutation
ManaCost:3 G U
Types:Sorcery
A:SP$ ChangeZone | Cost$ 3 G U | ValidTgts$ Creature | TgtPrompt$ Select target creature | Origin$ Battlefield | Destination$ Hand | SubAbility$ TrigToken | SpellDescription$ Return target creature to its owner's hand. Create X 1/1 green Saproling creature tokens, where X is that creature's mana value.
#X will be the Converted Mana Cost of the target of Aether Mutation
SVar:TrigToken:DB$ Token | TokenAmount$ X | TokenScript$ g_1_1_saproling | TokenOwner$ You
SVar:X:Targeted$CardManaCost
DeckHas:Ability$Token
Oracle:Return target creature to its owner's hand. Create X 1/1 green Saproling creature tokens, where X is that creature's mana value.