"Ah, here are the first of them. Forward, Artax!" Not waiting for his mount, August moves up to stand behind Arya, raising the orb of light high. Its cloudy contents swirl and align themselves, and for a brief moment the street goes dark as all of the sphere's illumination is focused into a brilliant beam targeting one of the walking corpses. The recalcitrant horse moves forward to stand in front of August only after its master's display is finished, clearly acknowledging the dead creatures as enemies only reluctantly.

Spoiler
Show
August will move to G14 and fire one charge from the Radiant Sphere at C2.
Ranged touch: (1d20+5)[9]
Damage: (4d6)[10]
Concealment (miss on 1): (1d5)[3]
Artax will move to E12/F13 (he's a Large creature).