This creature is over 40 feet tall, and looks like a cross between an air elemental and a water elemental, or perhaps a black storm cloud compressed into a vaguely humanoid shape. Jagged bolts of lightning form bright, eye-like spots within its churning depths.
AC 30, touch 21, flat-footed 17 (+12 Dex, +1 dodge, +9 natural, –2 size)
Speed fly 100 ft. (perfect), swim 90 ft.
At will—create water, invisibility (self only), summon monster II (air or water elemental only)
Str 30, Dex 35, Con 22, Int 15, Wis 15, Cha 18
Airborne creatures take a –1 penalty on attack and damage rolls against the herald.
The herald can throw blasts of cold or electricity to damage foes. These blasts have a maximum range of 100 feet.
Once per day, the herald can merge with an unattended object of Large, Huge, or Gargantuan size, giving it life as an Animated Object. The herald flows into the animated object, and cannot itself be harmed while in this form, though the animated object can be damaged as normal. The herald controls the object and may speak through it and use any of its own spell-like abilities in addition to those of the animated object, but may not use any of its own extraordinary or supernatural abilities. The herald may animate an object for an indefinite period, and may leave whenever it chooses, though it may not animate another object for 24 hours after leaving. The herald can be driven out of an object by dismissal or by taking 10 or more points of damage from a channel energy effect utilizing the Elemental Channel feat to damage air or water elementals. If driven out, the herald appears in an adjacent space to the now-inert object and is stunned for 1d4 rounds.
The herald gains a +1 bonus on attack and damage rolls if both it and its opponent are touching water.
These modifiers apply to bull rush and overrun maneuvers, whether the elemental is initiating or resisting these kinds of attacks. (Unlike a water elemental, the herald does not have a penalty if it or its opponent is touching the ground.)