Tiberolith

Huge construct, neutral evil

Armor Class 17 (natural armor)
Hit Points 162 (13d12+78)
Speed 30 ft.

STR	DEX	CON	INT	WIS	CHA
24 (+7)	11 (+0)	22 (+6)	1 (-5)	11 (+0)	1 (-5)

Saving Throws Str +11, Con +10
Damage Resistances lightning
Damage Immunities acid, poison
Condition Immunities charmed, frightened, poisoned
Senses darkvision 60 ft., passive Perception 10
Languages –
Challenge 12 (8,400 XP)

SPECIAL TRAITS

• Corrosive Strikes. A tiberolith that has less than half of its maximum hit points deals an extra 7 (2d6) acid damage with its slam attack.

ACTIONS

• Multiattack. The tiberolith makes two slam attacks.
• Slam. Melee Weapon Attack: +11 to hit, 1reach 5 ft., one target. Hit: 40 (6d10 + 7) bludgeoning damage.
• Shockwave (Recharge 5-6). The tiberolith releases electricity in a 30-foot radius. Each creature in that area must succeed a DC 17 Dexterity saving throw or take 19 (3d12) lightning damage.
• Spell Release. When a spell is trapped within the tiberolith, it can cast that spell as if the original caster had cast it for the purposes of attack rolls and the spell save DC.

REACTIONS

• Spell Trap (1/Day). When the tiberolith fails its saving throw against a spell, it can instead choose to pass it. The spell is then trapped within the tiberolith.

ABOUT

Tiberoliths are magical constructs with primitive internal mechanical components, held together with sinew and plant matter. Created by a vicious lost civilization to protect its citadels, villages, and treasures, tiberoliths are found in submerged ruins or on the beaches and bluffs of long-deserted islands. They remain immobile unless attacked or approached by unauthorized intruders. Each is covered in a unique pattern of markings that glow blue when it moves. When active, it makes an unmistakable high-pitched whirring sound. Its stone body is filled with an acidic blue alchemical liquid that channels electricity from its mechanisms. In addition to this fluid, its hollow interior spaces have puzzlebox-like devices anchored within them, though how these relate to the creature’s movement is unknown. A tiberolith typically stands 18 feet tall and weighs 7,000 pounds.