Creature — Elemental 3/3, 3R (4)
Common
When Coal Stoker enters the battlefield, if you cast it from your hand, add {R}{R}{R} to your mana pool.
"The day is mine! I sent three such creatures against my foe, then watched as my magefire popped her soldiers like overripe spleenfruits."
—Dobruk the Unstable, pyromancer
Illus. Mark Zug

1/25/2011: You get the mana whether you want it or not. If you don't spend it, it will disappear at the end of the current step (or phase).
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern