Cleon
Legend
That'll work.
Updating the Porton Working Draft.
Tactics: Portons typically ignore other creatures and objects; indeed, they can't sense anything smaller than a large wagon. Portons barely respond to attacks at all, just blasting foes with dark lightning while continuing what they are doing.
I have some flavour text I prepared earlier. What do you think of this:
A disc of shimmering nothingness hangs in the sky. It's size is vast - maybe as wide as you could throw a dart or hammer and as tall as an ogre. There's no visible substance to it, just a twisting distorting in the air like the heat-haze above a furnace. It could just be a weird weather phenomena, but it doesn't seem to be moving with the wind.
Portons are strange entities that exist by drawing energy from negative elemental planes. They are effectively autonomous, self-generating gateways to the various negative elemental planes. It is unclear whether a porton is "alive" in any conventional sense, for they are insubstantial beings without anatomy or organs. Anything that “touches” a porton risks being sucked through its gateway to one of the negative planes it feeds upon, maybe lost forever.
Portons are mindless beings who are unable to sense anything much smaller than itself. They wander the sky at random, virtually insensible to their surroundings. Portons fly continuously, never touching the ground. Indeed, if one should land the ground would likely disappear into a negative plane. Portons always fly in a horizontal orientation, their disc never tilts in any direction.
A porton can focus negative energy into deadly bolts that look like lightning, if lightning were utterly black. They reflexively shoot these blots at anything that obstructs their passage. Portons seem to lack any sense for self-preservation. Even if a powerful foe does potentially deadly injury to a porton, it will carry on doing whatever it was up to before the attack began; its only reaction is to blast the intruder with black lightning, just as it would any other obstacle.
It is unknown how – or if – portons reproduce. Some extremely powerful undead can order portons to follow simple instructions, possibly via a secret spell or feat.
A porton is weightless, approximately 100 feet in diameter, and 8 to 10 feet thick.
Combat
Although a porton can perform the Run action or make double moves, it very rarely does so. They just fly leisurely along, even if in the middle of a frenzied battle, using their black lightning against any object or creature that interferes with their travels. Portons rarely target humanoids with their black lightning because their blindsight is incapable of seeing creatures smaller than an elephant. A porton will only use its touch attack by accident or if compelled to by another creature, such as a powerful lich.
While a porton does not wittingly "fight" it is also incapable of retreat or surrender; it will continue projecting Black Lightning until any irritants in its way have been removed or the porton is destroyed.