Boros Keyrune | 227 | Gatecrash

Set: Gatecrash
Rarity: U
#: 227
Creature Type or Sub Type: Artifact
Rules Text Contains: T: Add R or W to your mana pool.
RW: Boros Keyrune becomes a 1/1 red and white Soldier artifact creature with double strike until end of turn. (It deals both first-strike and regular combat damage.)