Spriggan, Natural Form (CR 3)

Small Fey
Alignment: Usually chaotic (any)
Initiative: +9; Senses: low-light vision and Listen +6
Languages: Gnome and Common

AC: 19 (+1 size, +4 Dex, +4 chain shirt), touch 15, flat-footed 15
Hit Dice: 5d6+5 (22 hp)
Fort +2, Ref +9, Will +3
Speed: 20 ft.
Space: 5 ft./5 ft.
Base Attack +2; Grapple -2
Attack: Short sword +6 melee
Full Attack: Short sword +6 melee
Damage: Short sword 1d6
Special Attacks/Actions: Sneak attack +3d6, spell-like abilities, size change
Abilities: Str 10, Dex 20, Con 12, Int 11, Wis 9, Cha 11
Special Qualities: size change
Feats: Improved Initiative; Weapon Finesse (short sword)
Skills: Climb +5, Disable Device +7, Hide +14, Listen +6, Move Silently +10, Open Lock +12, and Sleight of Hand +10
Advancement: By character class
Climate/Terrain: Any forest
Organization: Solitary or pack (3-12)
Treasure/Possessions: Standard

Source: Fiend Folio

Sneak Attack (Ex): Anytime a spriggan's target is denied a Dexterity bonus, or when a target is flanked by a spriggan, the spriggan deals an additional 3d6 points of damage on a successful melee attack. This damage stacks with sneak attack damage from other sources, such as rogue levels.

Spell-like Abilities: At will - produce flame, scare, shatter. Caster level 8th; save DC 10 + spell level.

Size Change (Su): An will, spriggans can change their size in a fashion similar to the effect of an enlarge spell. The size change from Small to Large gains +8 Strength, -4 Dexterity, +6 Constitution and -2 to attack bonus and Armor class. A spriggan's short sword has the same attributes as a Large short sword when enlarged. An enlarged spriggan is unable to make a sneak attack or use its spell-like abilities.

Skills: Spriggans have a +4 racial bonus on Climb, Disable Device, Move Silently, Open Lock, and Sleight of Hand checks.

Spriggans employ tactics intended to startle or unnerve their foes. They swarm around opponents when small, only to enlarge at the last minute. This allows spriggans to use their greater reach for attacks of opportunity on advancing enemies. More dexterous spriggans serve as back-up to their kin in melee, remaining in the shadows to thwart foes by sneak attacks, stealthy thieving, or casting their shatter ability.

A spriggan can be summoned using a summon nature's ally IV spell.