
Boros Keyrune | Artifact | | {T}: Add {R} or {W}.
{R}{W}: 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.) | Daniel Ljunggren

Orzhov Keyrune | Artifact | | {T}: Add {W} or {B}.
{W}{B}: Orzhov Keyrune becomes a 1/4 white and black Thrull artifact creature with lifelink until end of turn. | Daniel Ljunggren