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<BIG>'''Atroxasaurus'''</BIG> <br>
'''Colossal Aberration (Abomination)''' <br>
'''Divine Rank:''' 0 <br>
'''Hit Dice:''' 75d8+1125+75+140 (1,940 hp) <br>
'''Initiative:''' +4 <br>
'''Speed:''' 60 ft. (10 squares) <br>
'''Armor Class:''' 62 (+60 natural, -8 size), touch 2, flat footed 62 <br>
'''Base Attack/Grapple:''' +56/+100 <br>
'''Attack:''' Claw +76 melee (8d8+28 damage) <br>
'''Full Attack:''' 2 Claws +76 melee (8d8+28 damage) and Bite +71 melee (16d6+14 damage) <br>
'''Space/Reach:''' 30 ft./20 ft. <br>
'''Special Attacks:''' Rend, spell-like abilities, summon energon <br>
'''Special Qualities:''' Hyper-Evolution, Fast Healing 30, Regeneration 15, spell resistance 52, imitate special ability, abomination immunities, fire resistance 20, cold resistance 20, damage reduction 10/epic, nondetection, blindsight 500 ft., immortality <br>
'''Saves:''' Fort +40, Ref +25, Will +43 <br>
'''Abilities:''' Str 67, Dex 10, Con 41, Int 2, Wis 18, Cha 24 <br>
'''Skills:''' Climb +70, Spot +27, Listen +41 <br>
'''Feats:''' Improved Initiative, Improved Toughness(1), Close Quarters Fighting(2), Power Attack, Improved Sunder, Combat Brute(2), Enduring Life(3), Eviscerator(3), Lasting Life(3), Dark Stalker(4), Improved Bullrush, Awesome Blow(5), Powerful Charge(4), Blindfight, Alertness, Cleave, Great Cleave, Weapon Focus (Claw), Weapon Focus (Bite) <br>
'''Epic Feats:''' Epic Toughness(2) (x7) <br>
'''Environment:''' Underground <br>
'''Organization:''' Solitary (Unique) <br>
'''Challenge Rating:''' 40 <br>
'''Treasure:''' None <br>
'''Alignment:''' Neutral <br>
'''Advancement:''' By evolution (see text) <br>
'''Level Adjustment:''' -----

''This creature looks like a massive lizard, but this is obviously not the case. Within seconds of being exposed to you, minor changes in the creature can be seen as it adapts to be able to kill you as efficiently as possible.''

Long ago, the world was inhabited by lizards of colossal size. These animals roamed the world for millions of years, but they were only a small part in a greater scheme. They were to be wiped out so that eventually the humanoids would take over as the dominant creatures. Ka the Preserver, a lesser god, had lived with the huge reptiles for millions of years, and grew attached to them. He did not want them to die, but he was powerless to stop the plans of the far more powerful Overdeity.

Still, he could not bear to watch these creatures die out, so he gathered up groups of these lizards, while also resurrecting earlier forms of prehistoric life, and placed them on a small group of islands. He warded the isles from the effects of the mass genocide, and their descendents have lived there ever since. Soon, he realized that despite his intervention, his beasts were slowly transforming into other animals (like the Bloodstrikers, Fleshrakers, and Swindlespitters). He realized that these new creatures, along with a group of newly evolved humanoid reptiles, would eventually take the isles from the descendents of the original inhabitants, so he took away their power to adapt.

He was working with a powerful form of positive energy, though, and couldn’t leave the power of evolution he had taken laying around, so he specifically bred a vessel to hold this power. He placed this power into this bred creature, but he didn’t believe the effect of his actions would be so large. The creature, once a small lizard, quickly mutated into a monster of colossal size with the ability to adapt to anything in a matter of seconds.

The monster started to ravage the main island, and the reptilian humanoids (the early Saurials) named this beast the Atroxasaurus, which meant “Cruel Lizard” in their tongue. Ka, disgusted with the creation, took the ever changing creature, and tried to remove the concentrated energy. He couldn’t. He finally realized that he had done the most terrible thing a deity could: he had created an Abomination. Ashamed at himself, he cast the Atroxasaurus into the labyrinth below the main island, so that it had nothing to imitate or adapt to.

It remains there to this very day, wondering through the underground caverns deep in the earth, below the rocks, below the fossils, even below the cores of the volcanoes.

==Combat==
Ka placed the Atroxasaurus deep underground so that it would avoid combat –and the hyper evolution that was bound to go along with it-, but if the creature was to ever enter combat, it would be difficult to kill, indeed. It adapts too quickly to be harmed with the same type of damage more than three times, and adventurers must refrain from using their best abilities, lest the “cruel lizard” use it against them.

'''Hyper Evolution (Su):''' If the Atroxasaurus is exposed to a harmful energy three times, or is placed in an environment that either harms or impairs it for three straight rounds, it becomes immune to that effect. For example, if it were to be damage with acid three times, it would be immune to acid forever afterwards. If it were to fall into lava or exposed to the void of space for three rounds straight and survive, it would now be fully capable of functioning in that environment without help. The rules are slightly different for epic weapons. If it is hit with an epic weapon three times, the magical effects of said weapon would be nullified when used against the Atroxasaurus, but it would still count as epic for the purpose for overcoming damage reduction. Keep in mind that this ability even works in non-harmful environments. For example, if the Atroxasaurus stays in an anti-magic field for three straight rounds, it can then use its magical abilities whenever it enters such a field.

'''Imitate Special Ability (Su):''' If the Atroxasaurus either watches something use a special ability (within a distance of 120 ft.) or is the target of a special ability, it can “copy” this ability and use it. The Atroxasaurus can only do it if it attempts to copy the ability within fives rounds after it was used. For example, if the Atroxasaurus was to be sneak attacked by a 20th level Rogue, it could in turn do a sneak attack that deals 10d6 damage. If it watches a 17th level wizard cast Fireball, it cast the spell too (caster level 17). This ability only works against creatures of non-divine nature and whose HD total equals 50 or less.

'''Regeneration (Ex):''' Atroxasaurus takes normal damage from sonic and electricity. The Atroxasaurus cannot become immune to these types of damage.

'''''Nondetection'' (Sp):''' The Atroxasaurus is constantly under the effects of the nondetection spell, caster level 75.

'''Rend (Ex):''' When the Atroxasaurus attacks an opponent with both claw attacks, it automatically latches onto the enemy and tears the flesh, dealing 16d8+14 damage.

'''Abomination Immunities (Ex):''' Abominations are immune to polymorphing, petrification, or any form-altering attack. They are not subject to energy drain, ability drain, or ability damage. They are immune to mind-affecting effects (charms, compulsions, phantasms, patterns, and morale effects), and the Atroxasaurus specifically is immune to negative energy.

'''Spell-like Abilities (Sp):''' At will- ''True seeing'', ''cure serious'' wounds. Caster Level 75th.

'''Summon Energon (Sp):''' The Atroxasaurus can summon 2d8+4 Xag-yas once per day, with 80% chance of success.

'''Immortality:''' The Atroxasaurus is naturally immortal and cannot die from natural causes. It do not age. The only way for the Atroxasaurus to die is through special circumstances, usually by being slain in magical or physical combat.

(1) From Monster Manual III <br>
(2) From Complete Warrior <br>
(3) From Libris Mortis <br>
(4) From Lords of Madness <br>
(5) From Monster Manual IV <br>