Boros Keyrune GTC/227

Set: Gatecrash
Collector Code: GTC/227
Name: Boros Keyrune
Type: Artifact
Oracle text: {T}: Add {R} or {W}. {R}{W}: This artifact 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.)
Rarity: Uncommon