Vivid Masks

{2}, {t}: Put an artifact card from your hand onto the battlefield face down. Treat it as a 2/2 colorless Mask artifact creature with morph, with the morph cost equal to its mana cost.
Metalcraft - {2}, {t}: Add one mana of any color to your mana pool for each color among artifacts you control. Activate this ability only if you control three or more artifacts.
Anonymity is the most powerful weapon of all.