Kabutops (3.5e Monster)

Combat
 (Ex): The claws of the Kabutops threaten on a 17-20 and deal x3 damage.

 (Ex): With every bite, enough blood is drunk to deal 1 points of Con damage per 2 HD. This restores 5 HP to the Kabutops for every point of Con damage dealt.

 (Ex): If Kabutops makes a full defence, its natural armour bonus improves by 4 points for three rounds. Multiple full defences do not stack.

 (Ex): On a successful grapple, Kabutops can attempt to wring all liquids from the target, forcing them to make a DC 18 Fortitude save (Strength-based). It must have already drained blood from them for this to work, and if they succeed on the saving throw they are immune until blood-drained again. If they fail, they take 1d6 points of damage per HD of the Kabutops, are Nauseated for 3 rounds and continue to bleed 10 hit points per round.

 (Ex): As a full round action, Kabutops can focus on combat, honing its abilities. On the next round (and in any attacks of opportunity taken before then), all claw attacks deal an additional 1d6+2 damage for every 2 hit dice.

Advancement
A Kabutops gains further powers as it advances, and receives the following attacks:

 (Su): Once per three rounds, Kabutops can telekinetically launch up to 3 chunks of stone within 100 feet. These are launched as ranged attacks at separate targets, and, if at least as large as a Medium character, deal 6d6 damage each. Furthermore, upon activation, Kabutops gains a +1 Enhancement Bonus to Natural Armour and to all Ability Scores for the next five minutes. Using this while the bonus is still in effect improves the bonus by 1 (to a maximum of +6 total) and resets the duration - any Kabutops of Intelligence 10 or more (including after using this) will figure out to throw random rocks around every minute or so just to keep the bonuses at the maximum.

 (Ex): At 18 hit dice, as a move action, Kabutops can coat its claws in negative energy. On the next attack made with each claw, the attacks are made as touch attacks and deal an additional amount of negative energy damage equal to 3d6 plus twice the Kabutops's level.

 (Ex): At 20 hit dice, Kabutops gains Spell Resistance equal to 11 + its Hit Dice.

Each time it gains one of these powers, Kabutops advances by +1 CR.