Your Mana Rock (Unknown Event #CA02b)

Your Mana Rock {2}

Artifact

Your Mana Rock enters the battlefield tapped.

During deckbuilding, write two different colors on Your Mana Rock.

{T}: Add one mana of a color written on Your Mana Rock.

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny