Aviendha, Far Dareis Mai

If Aviendha, Far Dareis Mai hasn't been
exerted this turn, you may exert it as it attacks. When you do, untap all other creatures you control and after this phase, there is an additional combat phase. (Exerted creatures
won't untap on your next untap step.)

“It is honor and burden to be Aiel, to walk in
the Light and to face the Shadow.”