Bilwis 2014
CR 1 elemental
Medium elemental, chaotic evil
STR12 (+1)
DEX16 (+3)
CON10 (+0)
INT10 (+0)
WIS13 (+1)
CHA16 (+3)
Air Form.
The bilwis can enter a hostile creature's space and stop there. It can move through a space as narrow as 1 inch wide without squeezing.
Actions
Slam.
Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) bludgeoning damage.
Whirlwind (Recharge 5–6).
Each creature in the bilwis' space and within 5 feet of it must make a DC 12 Strength saving throw. On a failure, a target takes 14 (4d6) bludgeoning damage and is knocked prone. On a success, a target takes half the bludgeoning damage and isn't knocked prone.
Source: Creature Codex (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details