[Creature] Oooh, pretty shiny...

[The Vorpal Tribble]

Heavenspark Firefly Swarm

Fine Magical Beast (extraplanar, incorporeal, swarm)
Hit Dice: 3d10 (16 hp)
Initiative: +5
Speed: Fly 30 ft. (perfect)
Armor Class: 24 (+1 deflection, +5 dex, +8 size), touch 24, flat-footed 16
Base Attack/Grapple: +3/-13
Attack: Swarm (1d6 plus spark the light within)
Full Attack: Swarm (1d6 plus spark the light within)
Space/Reach: 10 ft./-
Special Attacks: Distraction, incorporeal traits, spark the light within, true colors
Special Qualities: Darkvision 60 ft., detect evil, heavenly glow, immunity to electricity and weapon damage, resistance to fire 10, swarm traits
Saves: Fort +3, Ref +8, Will +1
Abilities: Str -, Dex 20, Con 10, Int -, Wis 11, Cha 12
Skills: -
Feats: -
Environment: Any good-aligned plane
Organization: Swarm, Spark (2-5 swarms), Nebulae (6-10 swarms)
Challenge Rating: 3
Treasure: None
Alignment: Always neutral
Advancement: -
Level Adjustment: -

A gentle beautiful glow sparks here, then there amongst the twilight, the color smearing across the darkness and only fading several moments later. The sparks then begin to migrate towards one another until the entire area glows with their beauty...

Heavenspark fireflies appear much as terrestial fireflies except they are slightly larger and with pearlesque markings along their wings, and antennae that shine like little sparks at the tips. Their ends produce not one color, but a different one each time, creating a pleasant, dream-like glow.

Heavenspark fireflies are almost completely harmless in small groups, merely producing but another pleasant affect to delight the inhabitants. Sometimes however they instinctively bunch together if evil is nearby and it is then they become dangerous, but even then only truly to those with dark souls. They are to be found on any upper plane that has a night-time cycle, though they are especially common in planes of perpetual shadows.


Combat
Heavenspark fireflies have no true emotions, but they do feel threatened by evil beings and instinctively swarm creatures of that nature.

Detect Evil (Sp): Heavenspark fireflies continually detect evil as the spell. Caster level 10th.

Distraction (Ex): Any living creature vulnerable to a swarm’s damage that begins its turn with a swarm in its square is nauseated for 1 round; a DC 11 Fortitude save negates the effect (evil creatures take a -4 penalty to their roll, and good creatures are unaffected). Spellcasting or concentrating on spells within the area of the heavenspark swarm requires a Concentration check (DC 20 + spell level). Using skills that involve patience and concentration requires a DC 20 Concentration check.

Heavenly Glow (Ex): A heavenspark firefly swarm provides dim illumination out to 60 feet.

Incorporeal Traits: A heavenspark firefly swarm is harmed only by other incorporeal creatures, magic weapons, powers, spells, spell-like abilities, and supernatural abilities. It has a 50% chance to ignore any damage from a corporeal source, except for force effects or attacks made with ghost touch weapons. It can pass through solid objects, but not force effects, at will. Its attacks ignore natural armor, armor, and shields, but deflection bonuses and force effects work normally against them. An incorporeal creature always moves silently and cannot be heard with Listen checks if it doesn’t wish to be.

Spark the Light Within (Su): Heavenspark fireflies can light a spark within evil, slowly burning it away. Each round an evil-aligned being takes damage from a heavenspark swarm they must succeed on a DC 14 Will save or take 1d4 points of Constitution drain as their form begins to glow as if lit from a fire within. Once reduced to 1 point of constitution the target gains the incorporeal subtype, and at 0 constitution they fade away, leaving only the core of their souls that descend to their destined lower plane. This condition can be removed with a Dispel Magic check. The ability damage must then be healed as normal. The save DC is Charisma-based and has a +2 racial bonus.

True Colors (Ex): Those within 60 feet of a heavenspark swarm are shown for what they are inside. How they truly appear within is exposed as the *Inner Beauty spell unless they succeed on a DC 14 will save each round. These features remain for as long as they are within range of the swarm and for 1 hour afterward. The save DC is Charisma-based and has a +2 racial bonus.

*From Fiendish Codex I

[The Demented One]

Neat idea. It might make sense to give them ability making good-aligned creatures immune to their swarm attack and distraction, or at least have their swarm attack deal nonlethal damage to good creatures.

[DracoDei]

That is what I said when I read them as part this thread (the third creature summons them). His reply was:

Originally Posted by The Vorpal Tribble

Well, basically only the 1d6 swarm damage works on good-aligned creatures, and I'm saying that still works because they are in a frenzy over the evil-aligned creature that got them rowdy to begin with. Probably adjust to make even the swarm non-lethal towards good.

Which sounds plausible enough to me.