{Tap}: Add {B} or {R} to your mana pool.
{B}{R}: Rakdos Keyrune becomes a 3/1 black and red Devil artifact creature with first strike until end of turn.

The Rakdos use it for everything you can think of and plenty more than that.

• Number: 232
• Rarity: U
• Type: Artifact
• Mana cost: 3
• Color: Artifact
• Artist: Daniel Ljunggren