Rocky Tar Pit
Artifact Land (Rare)

(Rocky Tar Pit isn't a spell.)

At the beginning of your upkeep, Rocky Tar Pit deals 2 damage to target creature you control.

X, Tap: Tap target artifact with converted mana cost X or less.

R, Tap: Add BB to your mana pool.

B, Tap: Add RR to your mana pool.

Eric Argyle