Just for kicks:
Phallicorn
Medium-Size Magical Beast
Hit Dice: 2d10+6 (17 hp)
Initiative: +2 (Dex)
Speed: 50 ft.
AC: 16 (+2 Dex, +4 natural)
Attacks: 2 hooves +4 melee
Damage: Hoof 1d3+2
Face/Reach: 5 ft. by 5 ft./5 ft.
Special Qualities: Magic circle against evil, spell-like abilities, immunities
Saves: Fort +6, Ref +6, Wil +4
Abilities: Str 15, Dex 17, Con 16, Int 10, Wis 19, Cha 22
Skills: Animal Empathy +10, Listen +9, Move Silently +6, Sexual Prowess +14, Spot +9, Wilderness Lore +8
Feats: Alertness
Climate/Terrain: Temperate forest
Organization: Solitary, pair, or crew (3-6)
Challenge Rating: 2
Treasure: None
Alignment: Usually neutral good
Advancement: 3-6 HD (Medium-size)
Cousins of the fierce, noble unicorns, the loving, carnal phallicorns are more open to contact with non-sylvan creatures. They are the creations of various deities of love and desire (whether whole-cloth or normal unicorns transformed), and are thought to be one of the major reasons young princesses ask their fathers for ponies.
Phallicorns are lithe equines with pale, creamy coats and sky-blue, lavender, chestnut, or golden eyes. Long, silky gold hair hangs down from mane and forelock. An erect penis-like horn, 6 inches to 1 foot in length, grows from the center of the creature's forehead. A typical adult phallicorn grows to 6 feet in length, stands 4 feet high at the shoulder, and weighs 275 pounds.
Phallicorns make their homes in brightly lit forest glades. They are completely bisexual, and open to coupling with almost any race of being, providing the being looks pleasant enough. Kind-hearted individuals, and those able to pretend at kind-heartedness are welcome to play or pass freely, while those of wantonly, reckless evil will quickly be reported to the more militant of the forest's defenders.
Lone phallicorns will usually approach pretty females or homosexual men, hoping to be ridden. Such a phallicorn, if treated kindly, may become such a character's loyal steed and sexual companion for life, even accompanying them beyond its forest.
A phallicorn's horn, as renowned for its sexual properties as it is, becomes limp and flaccid if removed from the creature's head. Therefore, evil creatures do not traffic in phallicorn horns as they do in the horns of unicorns.
Phallicorns speak Common and Sylvan.
Combat
Under normal circumstances, phallicorns will only attack to defend themselves, their lovers, or their forests. Unlike unicorns, the phallicorn's horn is too soft to use as
an effective weapon, so it will strike out with its hooves.
Magic Circle Against Evil (Su): This ability continuously duplicates the effects of the spell. The phallicorn cannot suppress this ability.
Spell-Like Abilities: Phallicorns can detect sexuality at will as a free action. Once per day a phallicorn can use teleport without error to move anywhere within its home. It cannot teleport beyond the forest boundaries nor back from outside.
A phallicorn can use arousal three times per day and prowess once per day, as cast by a 5th-level sorcerer, by touching a creature with its phallic horn. Once per day it can use embarrassing fetish, as cast by an 8th-level sorcerer, with a touch of its horn.
Immunities (Ex): Phallicorns are immune to all spells and effects of the Enchantment school.
Skills: Phallicorns receive a +4 racial bonus to Sexual Prowess checks.
*Phallicorns receive a +2 competence bonus to Wilderness Lore checks within the boundaries of their forest.