N Large magical beast
Init +7; Senses darkvision 60 ft., low-light vision; Perception +6
AC 17, touch 12, flat-footed 14 (+3 Dex, +5 natural, –1 size)
hp 51 (6d10+18)
Fort +8, Ref +8, Will +3
Defensive Abilities ethereal jaunt
Speed 40 ft., climb 20 ft.
Melee bite +10 (2d6+7 plus poison and grab)
Space 10 ft.; Reach 5 ft.
Special Attacks ethereal ambush
Str 20, Dex 17, Con 16, Int 7, Wis 13, Cha 10
Base Atk +6; CMB +12 (+16 grapple); CMD 25 (37 vs. trip)
Feats Ability Focus (poison), Improved Initiative, Skill Focus (Stealth)
Skills Climb +18, Perception +6, Stealth +7
Ethereal Ambush (Ex)
A phase spider that attacks foes on the Material Plane in a surprise round can take a full round of actions if it begins the combat by phasing into the Material Plane from the Ethereal Plane.
Ethereal Jaunt (Su)
A phase spider can shift from the Ethereal Plane to the Material Plane as a free action, and shift back again as a move action (or as part of a move action). The ability is otherwise identical to ethereal jaunt (CL 15th).
Bite—injury; save Fort DC 18; frequency 1/round for 8 rounds; effect 1d2 Constitution damage; cure 2 consecutive saves. The save DC is Constitution-based.