Instantáneo
La criatura objetivo que controlas y hasta una otra criatura legendaria objetivo que controlas hacen una cantidad de daño cada una igual a su fuerza a la criatura objetivo que no controlas.
If one of the two target creatures you control is an illegal target as Friendly Rivalry resolves, the other will still deal damage equal to its power.
If the last target is an illegal target as Friendly Rivalry resolves, or if both of the first targets are illegal targets, no creature deals or is dealt damage.