This creature resembles a giant wolf spider, except with a larger head and variegated markings in white, gray, and blue over the legs and back. Its eight eyes are silver-white.
Phase spiders are aggressive predators that can move quickly from the Ethereal Plane to attack opponents on the Material Plane.
A typical phase spider’s body is 8 feet long. It weighs about 700 pounds.
Combat
Phase spiders dwell and hunt on the Material Plane. Once a spider locates prey, however, it shifts to the Ethereal Plane to attack, attempting to catch its victim flat-footed. The spider shifts in, bites its victim, and retreats quickly back to the Ethereal Plane.
Phase spider
Large magical beast
Init +7; Senses darkvision, low-light vision; Perception +7
Defense
AC 16, touch 12, flat-footed 13 (−1 size, +3 Dex, +4 natural)
hp 44 (5d8+22)
Fort +7, Ref +7, Will +2
Offense
Speed 40 ft., climb 20 ft.; ethereal jaunt
Melee bite +8 (1d8+6 plus poison)
Space 10 ft.; Reach 5 ft.
Statistics
Str 18, Dex 17, Con 16, Int 7, Wis 13, Cha 10
Base Atk +5; CMB +10; CMD 23 (35 vs. trip)
Feats Ability Focus (poison), Improved Initiative, Skill Focus (Stealth)
Skills Climb +17, Perception +7, Stealth +7
Morale timid (−4)
Ecology
Environment warm hills
Organization solitary or cluster (1d4+1)
Special Abilities
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 during a move action). The ability is otherwise identical with ethereal jaunt.
Poison (Ex)
Bite—injury
save Fort DC 17
frequency 1/round for 6 rounds
effect 1 step on the Constitution damage track
cure 2 saves