Missandei of Naath

Missandei of Naath enters the battlefield as an artifact.
At the start of every upkeep add {c}{c}{c} to your mana pool.
{c} mana can be used as any color mana.
If Missandei of Naath is targeted as an artifact, negate the effect, this card becomes a 1/1 creature with the same abilities.
{t}: You do not take damage this turn.