What appears to be a miniaturized orrery zips through the air, with thin, sharp blades flashing periodically from within.
Speed fly 50 ft. (perfect)
Str 6, Dex 15, Con 11, Int 10, Wis 13, Cha 12
A harbinger can extend blades from its body to strike with as primary natural attacks. These blades possess a +1 enhancement bonus on attack and damage rolls, and are treated as both magic and good-aligned for the purposes of penetrating damage reduction.
As a move-equivalent action, a harbinger can break apart into its components. This is treated as gaseous form, except the archon retains its full flight speed and DR, and cannot fit through gaps smaller than 1 inch in diameter. Reforming into an orrery is a standard action.
Once per minute, a harbinger archon can emit a blast of energy that deals 2d6 points of force damage to adjacent creatures. A DC 12 Reflex save halves this damage. The harbinger can choose to omit any target from this blast that it desires, damaging only those foes it chooses. The save DC is Charisma-based.