Obsidian Giant

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Throughout Eska’s Kinslayer Wars, the gray elf wizards performed all manner of experiments to increase the grey elves armies without any elves having to give up either their lives or their immortality. The early centuries of the Wars saw many aberrations summoned and monstrosities created and released upon the land.  While the hobgoblins, their greatest success, came in the late stages of the Kinslayer Wars, the early centuries of the Wars saw many failures.


The obsidian giants were an ingenious idea towards the beginning of the Kinslayer Wars. A sort of power armor that an elf could don and fight in, and not give up their immortality. Initially a success, the obsidian giants soon proved to be a failure. They helped win a key early battle, but the horrible truth of their fate caused much sorrow.

I converted the obsidian giants from the wonderful Teratic Tome. I started with the stone giant stats as a framework and tweaked from there.

Obsidian Giant
Huge humanoid (elf), chaotic evil
Armor Class 18 (natural armor)
Hit Points 126 (11d12 + 55)
Speed 40 feet

23 (+6)
15 (+2)
20 (+5)
15 (+2)
7 (-2)
7 (-2)

Saving Throws Dex +5, Con +8, Wis +4
Skills Athletics +12, Perception +4
Damage Resistances fire
Senses darkvision 60 feet, passive Perception 8
Languages can’t speak, but understands elvish
Challenge 7 (2,900 XP)

Fey Ancestry. The obsidian giant has advantage on saving throws against being charmed, and magic can’t put the obsidian giant to sleep.
Detect Magic. The obsidian giant can detect magical auras within 60 feet of it. In addition to magic items and spell effects, it can also detect celestials, elementals, fey and fiends, as well as creatures with innate spellcasting or a spellcasting ability.
Consume Magic. As an action, the obsidian giant can destroy a magic item, regaining hit points. The obsidian giant regains hit points for each level of rarity of the item. 7 (1d12) for common, 13 (2d12) for uncommon, 20 (3d12) for rare, 26 (4d12) for very rare, and 33 (5d12) for legendary.
If a magical creature is slain, such as a celestial, elemental, fey or fiend, as well as creatures with innate spellcasting or a spellcasting ability, the obsidian giant can spend an action to consume its soul, or magical essence to regain hit points. The obsidian giant regains 7 (1d12) hit points for every Challenge Rating level of the creature consumed. The creature consumed is forever dead and cannot be raised or resurrected in any way.
Innate Spellcasting. The obsidian giant is a 15th level spellcaster. Its spellcasting ability is Intelligence (spell save DC 12, +5 to hit with spell attacks). It can innately cast the following spells, requiring no material components:
At Will: firebolt
1/day: fireball, wall of fire, fire shield

Multiattack. The obsidian giant makes two claw attacks.
Claw. Melee Weapon Attack: +9 to hit, reach 15 ft., one target.
Hit: 24 (4d8 + 6) slashing damage.

Obsidian giants are not true giants; they are elves. Centuries ago, at the beginning of the Kinslayer Wars, a group of gray elves transformed themselves in order to attack the dark elves. Using forbidden magic, they created massive exoskeletons of obsidian that completely encased them; the giant arms are tipped with long, powerful claws of black metal, and the entire structure is covered in barbed spikes and razors of black stone. Within the armor, these gray elves were able to turn the tide of a horrific battle, and saved their realm.
However, in the aftermath, it was discovered that they could not escape the armor – they were bound within, and their magics could not set them free. In the days that followed, as their wizards tried every means they could think of, the elves learned that those trapped within the exoskeletons were starving, and the only sustenance that would satiate them was magic itself, in the form of magic items or magic creatures. By crushing magic items, or slaying enchanted creatures like unicorns, the imprisoned elves could assuage the hunger raging within.
Their people had no choice: they banished these brave warriors, and sent them far away, lest the destroy the very land they sought to defend. Now, years later, these hunger-maddened creatures wander foreign lands, where they are known as obsidian giants. No one knows that under the hard exterior lies a demented gray elf with no memory of its previous life.
Obsidian giants are driven by a lust for magic; it is all that sustains them. If they detect a magical item (or even suspect its presence), they will attack and try to destroy it, so they can feed upon its essence. If they encounter a magical creature (such as a griffon or pegasus), they will attempt to kill it, so they can devour its soul.
Powerful, undiscovered rituals can extract the gray elf from its magical armor; if the armor is destroyed, killing the elf in the process, then the body will be visible.
Should someone extract the elf from its exoskeleton, it will be necessary to cure the insanity which has taken hold. In time, the elf’s personality (and true alignment) may be restored.

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