Aviendha, Wise One

If Aviendha, Wise One 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. (An exerted creature won't
untap during your next untap step.)

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