Name:Mystic Skull
ManaCost:2
Types:Artifact
A:AB$ Mana | Cost$ 1 T | Produced$ Any | SpellDescription$ Add one mana of any color.
A:AB$ SetState | Cost$ 5 T | Defined$ Self | Mode$ Transform | SpellDescription$ Transform CARDNAME.
AlternateMode:DoubleFaced
Oracle:{1}, {T}: Add one mana of any color.\n{5}, {T}: Transform Mystic Skull.

ALTERNATE

Name:Mystic Monstrosity
ManaCost:no cost
Types:Artifact Creature Construct
PT:5/6
S:Mode$ Continuous | Affected$ Land.YouCtrl | AddAbility$ AnyMana | Description$ Lands you control have "{T}: Add one mana of any color."
SVar:AnyMana:AB$ Mana | Cost$ T | Produced$ Any | Amount$ 1 | SpellDescription$ Add one mana of any color.
Oracle:Lands you control have "{T}: Add one mana of any color."
