Mythic Role

Shadowseers can see those moments when the warriors
of the now most closely embody the mythic heroes of
long ago. They do all they can to aid those who unknowingly don such mantles.
Use this Stratagem before the battle, if your army includes a SHADOWSEER. Select one AELDARI
unit from your army. Each time that unit is
chosen to shoot or fight, you can re-roll one hit
roll or one wound roll for those attacks. You can
only use this Stratagem once.