This enormous black and green serpent has two viper-like heads, long and sinuous body and a pair of membranous wings.
CR 13; XP 25,600
CN Huge Dragon (extraplanar)
Init +8; Senses blindsense 60 ft., darkvision 60 ft., low-light vision, true seeing; Perception +24
AC 28, touch 12, flat-footed 14 (+4 Dex, +16 natural, –2 size)
hp 175 (13d12+91); fast healing 10
Fort +16, Ref +14, Will +16
Defensive Abilities all-around vision, twisted mind; Immune paralysis, poison, sleep; Resist acid 20, cold 20, electricity 20, fire 20
Speed 30 ft., fly 120 ft. (average), swim 30 ft.
Melee 2 bites +22 (2d6+11 and poison), tail slap +18 (2d6+5 and grab)
Special Attacks breath weapon (60-ft. cone or 120-ft. line, 12d6 damage, Reflex DC 22 for half, usable every 1d4 rounds), constrict (2d6+5)
Spell-Like Abilities (CL 13th; concentration +18)
At will—mass suggestion (DC 21)
Str 32, Dex 18, Con 22, Int 19, Wis 19, Cha 21
Base Atk +13; CMB +26 (+30 grapple); CMD 40 (can't be tripped)
Feats Alertness, Great Fortitude, Improved Initiative, Lightning Reflexes, Skill Focus (Bluff), Toughness, Weapon Focus (tail slap)
Skills Acrobatics +17, Bluff +27, Fly +16, Knowledge (arcana) +20, Knowledge (nature) +20, Knowledge (planes) +20, Linguistics +20, Perception +24, Sense Motive +24, Spellcraft +20, Swim +19
Language Abyssal, Aklo, Aquan, Auran, Celestial, Draconic, Dwarf, Elven, Giant, Ignan, Infernal, Sylvan, Terran
SQ compression, hold breath
Breath Weapon (Su) Sweet-Venomous-Whispers left head can breathe a 60-ft. long cone of electrified frost, dealing 6d6 cold and 6d6 electric damage. Its right head can breathe a 120-ft. long line of burning corrosive oil, dealing 6d6 acid and 6d6 fire damage. A successful Reflex saving throw halves damage of either breath weapon. After using any of its breath weapons, Sweet-Venomous-Whisper has to wait for 1d4 rounds before using either again.
Sweet Poison (Ex) Bite—injury or ingestion; save Fort DC 22, frequency 1/minute for 5 minutes, effect 1d3 Wis, cure 2 consecutive saves. Creature affected by the sweet poison suffers from a vivid hallucinations and has a small chance of having a sudden flash of profound insight (1% chance per point of Wisdom damage suffered), though there is no way of discerning it from a hallucinated delusion. It acts as a mild hallucinogenic drug for evil outsiders with racial immunity to poison, as long as they are not immune to mind-affecting effects.
Twisted Mind (Ex) Sweet-Venomous-Whisper's mind is twisted like serpents' nest. It gains +4 racial bonus to Will saving throws and no know form of mortal magic can discern its lies from truth nor force it to tell the truth.
Sweet-Venomous-Whispers is a devious wyrm, sowing discord and chaos with its honeyed words. It uses (in)convenient truths, half-truths, and omissions as often as lies and deception, and it sometimes hides bits of valuable knowledge (if not wisdom) among it statements. Despite its sinister and twisted goals, the "Sweet Serpent", as it is sometimes called, is a very friendly and cordial entity, going as far as admitting that the truthful revelations its spread are intended to create discord and chaos. It also claims that its lies are spoken with higher purpose in mind and certainly there were instances where some of them brought (debatable) beneficial effects...
When speaking, it often uses both of its heads, switching between them in mid-sentence or speaking in unison. A few people who met Sweet-Venomous-Whispers claim that one head always lies and the other always speaks the truth, but there is no consensus which is which.