Name:Artifact Mutation
ManaCost:R G
Types:Instant
A:SP$ Destroy | Cost$ R G | ValidTgts$ Artifact | TgtPrompt$ Select target artifact | NoRegen$ True | SubAbility$ TrigToken | SpellDescription$ Destroy target artifact. It can't be regenerated. Create X 1/1 green Saproling creature tokens, where X is that artifact's converted mana cost.
#X will be the Converted Mana Cost of the target of Mutation
SVar:TrigToken:DB$Token | Cost$ 0 | TokenAmount$ X | TokenName$ Saproling | TokenTypes$ Creature,Saproling | TokenOwner$ You | TokenColors$ Green | TokenPower$ 1 | TokenToughness$ 1 | References$ X
SVar:X:Targeted$CardManaCost
DeckHas:Ability$Token
SVar:Picture:http://www.wizards.com/global/images/magic/general/artifact_mutation.jpg
Oracle:Destroy target artifact. It can't be regenerated. Create X 1/1 green Saproling creature tokens, where X is that artifact's converted mana cost.