Sand Worm, Adult (CR 4)
This large desert worm is covered with sand-colored plates of chitinous armor. Its trifurcated mouth opens to reveal row upon row of razor sharp teeth.
N Huge magical beast (desert, earth)
Init +0; Senses darkvision 60 ft., low-light visions, tremorsense 60 ft.; Perception +7
AC 21, touch 8, flat-footed 21 (–2 size, +11 natural armor)
hp 49 (5d10+27)
Fort +8, Ref +4, Will +2
Immune acid, fire, paralysis, and poison
Weaknesses susceptible to cold
Speed 30 ft., burrow 30 ft.
Melee bite +11 (2d6+7/19-20 plus grab)
Space 15 ft., Reach 10 ft.
Special Attacks sand tremor, swallow whole (3d6 acid damage, AC 16, 20 hp)
The favored tactic of the sandworm is to lurk beneath the surface of the desert sands until it senses a creature moving by with its tremorsense, where