Immutable Form. The Crystalline Colossus is immune to any spell or effect that would alter its form.
Magic Weapons. The Crystalline Colossus' weapon attacks are magical.
Gravity Well. Any creature that starts its turn within 30 feet of the Crystalline Colossus is pulled 10 feet towards the Crystalline Colossus.
Scour. The Crystalline Colossus is surrounded by a cloud of crystals which slowly build up on surrounding surfaces. Any creature that ends its turn within 10 feet of the Crystalline Colossus which does not have an Elemental Affinity for Earth of at least 1 takes 5 slashing damage and has its movement speed reduced by 5 feet for one minute, the reduction in speed is cumulative with each new application resetting the duration to one minute. A creature whose speed is reduced to zero by this effect is restrained and must make a DC 15 strength check to break free or the crystals may be broken by a bludgeoning weapon, AC 5, 10 hitpoints.
Multiattack. The Crystalline Colossus makes two slam attacks.
Slam. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 19 (3d8 + 6) bludgeoning damage. When the Crystalline Colossus hits a creature with one of its slams, the target must succeed on a DC 15 Constitution saving throw or be stunned until the end of its next turn.
Description
The Crystalline Colossus is a massive humanoid elemental, formed from bluish crystal grown over hundreds of years of exposure to an elemental node. It's multifaceted surface is slightly translucent, revealing a humanoid skeleton inside the central body.