Precious Arachnids

In the twilight years of an ambitious metallurgist's obsession, the alchemist Cornelius Vex sought to create the perfect fusion of beauty and function by weaving rare minerals and precious metals into living arachnid forms through forbidden transmutation rituals. His creations—each infused with elemental essences drawn from the world's most volatile sources—were meant to serve as jeweled guardians for the wealthy elite, their venom and breath weaponized into instruments of prestige and protection. However, the moment Vex achieved his greatest success with the first Ruby Spider, something unexpected occurred: the creatures developed consciousness and autonomy, swiftly rejecting their intended servitude and escaping into the wild to build their own civilization. Over generations, the Precious Arachnids evolved beyond their creator's wildest imaginings, developing reproductive capabilities that allowed them to propagate without human intervention and adapting their elemental powers into devastating survival mechanisms. Now thriving across forgotten ruins and crystalline caverns, these magnificent monsters have become apex predators, their gemstone bodies glittering in darkness as they carve territories with fire, ice, venom, and poison—each variant a living monument to both the heights of creation and the hubris of those who dared to play god. The scattered remains of defeated specimens have become legendary treasures, their gems and carapaces sought after by adventurers and craftspeople who recognize them as the most valuable materials in existence.

Strength

18, modifier +4

Dexterity

16, modifier +3

Constitution

20, modifier +5

Intelligence

12, modifier +1

Wisdom

14, modifier +2

Charisma

10, modifier +0

Venomous Bite

Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 2d10 + 4 piercing damage plus 3d6 poison damage.

Elemental Breath

Recharge 5-6. Exhale elemental energy in a 30 ft. cone. Each creature must make a DC 16 saving throw, taking 6d6 damage of the chosen element on a failed save, or half as much on a success.

Scorching Charge

If the creature moves at least 20 ft. straight toward a target and hits with a melee attack, it deals an extra 2d6 fire damage.

Frostbite Web

Ranged Attack: +7 to hit, range 30 ft., one target. Hit: Target is restrained and takes 3d8 cold damage at the start of its turn. DC 16 Strength check to escape.

Elemental Affinity

Each variant has a specific elemental affinity granting unique resistances.

Gemstone Camouflage

Can blend into surroundings, gaining advantage on stealth checks in rocky terrain.

strength

+8

dexterity

+7

constitution

+9

wisdom

+6

Fire

Cold