Mox Tantalite (0228) [Secret Lair x MSCHF: The Zeta Set]

Suspend 3—0 (Rather than cast this card from your hand, pay 0 and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)
T: Add one mana of any color.