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Gargantua Rattlesnake

by Jamie Baty

IM 36
Gargantuan Animal
Hit Dice: 16d8+64 (136 hp)
Initiative: +7 (+3 Dex, +4 Improved Initiative)
Speed: 40 ft. (8 squares), climb 40 ft. (8 squares), swim 40 ft. (8 squares)
Armour Class: 18 (-4 size, +3 Dex, +9 natural), touch 9, flat-footed 15
Base Attack/Grapple: +12/+32
Attack: Bite +16 melee (3d6 +8)
Full Attack: Bite +16 melee (3d6 +8) and Bite +11 melee (3d6 +4)
Space/Reach: 20 ft. /15 ft.
Special Attacks: Extra attack, improved grab, poison, swallow whole
Special Qualities: Low-light vision, scent
Saves: Fort +14, Ref +13, Will +6
Abilities: Str 27, Dex 17, Con 19, Int 1, Wis 12, Cha 2
Skills: Balance +11, Climb +16, Hide -1, Listen +6, Spot +6, Swim +17
Feats: Improved Initiative, Weapon Finesse
Environment: Temperate mountains
Organisation: Solitary
Challenge Rating: 8
Treasure: None
Alignment: Always neutral
Advancement: ---
Level Adjustment: ---

Gargantua rattlesnakes are 40 feet long. They are pale brown with white and grey scales set in a diamond pattern. On their tails is a dried, scaly rattle, which they often shake to warn off intruders or attackers who are too large to eat. . It has been created by the Immortal Demogorgon to help further her causes.

Gargantua rattlesnakes are very fast and can attack twice each round with their venomous bite. Because of their creation by Demogorgon, they are much more aggressive than their normal counterparts.

Extra Attack (Ex): Rattlesnakes strike so quickly that, in conjunction with a Full Attack action, they can attack twice with their bite in the same round. The second attack is treated as a secondary attack and suffers a -5 penalty on the attack roll.

Improved Grab (Ex): If a Gargantua rattlesnake hits with its bite attack, it deals normal damage and attempts to start a grapple as a free action without provoking an attack of opportunity. If the grapple succeeds, the Gargantua rattlesnake may attempt to swallow the victim whole in the next round. A Gargantua rattlesnake may only grab an opponent that is Large size or smaller.

Poison (Ex): A rattlesnake has a poisonous bite that deals initial and secondary damage of 1d6 Con if the victim fails a DC 22 fortitude save. The save DC is constitution-based.

Swallow Whole (Ex): A Gargantua rattlesnake can try to swallow a grappled opponent of up to two sizes smaller by making a successful grapple check. The swallowed creature takes 2d8+12 points of bludgeoning damage and 4 points of acid damage per round from the Gargantua rattlesnake's gizzard. A swallowed creature can cut its way out by using a light slashing or piercing weapon to deal 30 points of damage to the gizzard (AC 14). Once the creature exits, muscular action closes the hole; another swallowed opponent must cut its own way out.
A Gargantua rattlesnake's gizzard can hold 1 large, 4 medium, 16 small, 64 diminutive or smaller opponents.

Scent (Ex): This special quality allows a Gargantua rattlesnake to detect approaching enemies, sniff out hidden foes, and track by sense of smell.

Skills: Gargantua rattlesnakes receive a +4 racial bonus to Hide, Listen, and Spot checks and a +8 racial bonus to Balance and Climb checks. A rattler can always choose to take 10 on a Climb check, even if rushed or threatened. They can use either their Strength or Dexterity modifier for Climb checks, whichever is higher. A rattlesnake has a +8 racial bonus on any Swim check to perform some special action or avoid a hazard. It can always choose to take 10 on a Swim check, even if distracted or endangered. It can use the run action while swimming, provided it swims in a straight line