Unassuming Mimic

{t}: Create a Gold artifact token with "Sacrifice
this artifact: Add one mana of any color to your mana
pool." Any player may activate this ability, but
only when Unassuming Mimic is not a creature.
Whenever a player other then its controller taps Unassuming Mimic for mana it becomes a 5/5 Construct creature with menace until the end of
its owners next turn starting at their next upkeep.
Whenever Unassuming Mimic is placed into the graveyard from play draw a card.