
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

Gruul Keyrune | Artifact | | {T}: Add {R} or {G}.
{R}{G}: Gruul Keyrune becomes a 3/2 red and green Beast artifact creature with trample until end of turn. | Daniel Ljunggren