Boros Keyrune 227 (Gatecrash)

{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.)

NM - $0.70
LP - $0.70
MP - $0.70
HP - $0.70
DMG - $0.70