HYDRA

HYDRA, 5-headed

Neutral Large Monster (reptile) (20-ft, 4,000-lbs)

FREQUENCY: Uncommon

NO. APPEARING: 1 (IV. 1)

SURPRISE: 33%

SENSES: infravision, all-around sight

ARMOR CLASS: 5

MOVE: 9"

HIT DICE: 5 (hp 8 per head)

% IN LAIR: 20%

TREASURE TYPE: B

ATTACK AC 0: 15

MELEE: 4 bites (1d6 primary) and 1 bite (1d6 iterative)

SPECIAL ATTACKS: hydra multi-attack/1 - Hits As: +1

SPECIAL DEFENSES: multi-headed, immune to weapon damage (body)

MAGIC RESISTANCE: Standard

INTELLIGENCE: Semi- (2-4)

MORALE: +25%

SAVES: Poison 11, Petrify 12, Wand 13, Breath 13, Spell 14

LEVEL: IV (XP 520 + 500 if pyrohydra)

6-headed—AC 5, HD 6, hp 48, THAC0 13, Hits as +1, Melee bite (1d6 each), Saves 11/12/13/13/14, XP 838 (+700)

7-headed—AC 5, HD 7, hp 56, THAC0 13, Hits as +2, Melee bite (1d8 each), Saves 10/11/12/12/13, XP 1,273 (+825)

8-headed—AC 5, HD 8, hp 64, THAC0 12, Hits as +2, Melee bite (1d8 each), Saves 10/11/12/12/13, XP 1,915 (+1,200)

9-headed—AC 5, HD 9, hp 72, THAC0 12, Hits as +3, Melee bite (1d8 each), Saves 8/9/10/9/11, XP 2,864 (+1,600)

10-headed—AC 5, HD 10, hp 80, THAC0 10, Hits as +3, Melee bite (1d8 each), Saves 8/9/10/9/11, XP 4,120 (+1,800)

11-headed—AC 5, HD 11, hp 88, THAC0 10, Hits as +4, Melee bite (1d10 each), Saves 7/8/9/8/10, XP 5,808 (+2,250)

12-headed—AC 5, HD 12, hp 96, THAC0 9, Hits as +4, Melee bite (1d10 each), Saves 7/8/9/8/10, XP 5,936 (+3,400)

13-headed—AC 5, HD 13, hp 104, THAC0 9, Hits as +4, Melee bite (1d10 each), Saves 5/6/7/5/8, XP 7,972

14-headed—AC 5, HD 14, hp 112, THAC0 8, Hits as +4, Melee bite (1d12 each), Saves 5/6/7/5/8, XP 8,116

15-headed—AC 5, HD 15, hp 120, THAC0 8, Hits as +4, Melee bite (1d12 each), Saves 4/5/6/4/7, XP 10,500

16-headed—AC 5, HD 16, hp 128, THAC0 7, Hits as +4, Melee bite (2d6 each), Saves 4/5/6/4/7, XP 10,660

17-headed—AC 5, HD 17, hp 134, THAC0 7, Hits as +4, Melee bite (2d6 each), Saves 3/4/5/4/6, XP 13,450

18-headed—AC 5, HD 18, hp 142, THAC0 7, Hits as +4, Melee bite (2d8 each), Saves 3/4/5/4/6, XP 13,650

19-headed—AC 5, HD 19, hp 150, THAC0 7, Hits as +4, Melee bite (2d8 each), Saves 3/4/5/4/6, XP 17,700

20-headed—AC 5, HD 20, hp 158, THAC0 7, Hits as +4, Melee bite (2d10 each), Saves 3/4/5/4/6, XP 17,940

Hydrae are gray brown to blackish brown with lighter underbellies tinged towards yellow or tan. Their eyes are amber to orange. The teeth are yellowish white.

Hydrae are reptilian monsters found in marshes, swamps, and similar places, as well as in subterranean lairs.

Their large, four-legged bodies are surmounted by from 5 to 12 heads (roll an 8-sided die to determine number). Each head has 1 hit die of a full 8 hit points. When all of a hydra's heads are killed, the body dies, but not until each and every head is killed.

The hydra attacks according to the number of heads it has, each head being considered as a hit die. Thus, a hydra of 7 heads attacks as a monster of 7 hit dice.

It is possible for the hydra to attack several opponents at once, and up to 4 heads are able to attack the same target simultaneously.

Damage scored is based on the number of heads the hydra has: hydrae of 5 or 6 heads do 1-6 hit points of damage/attack, those with 7 to 10 heads score 1-8 points of damage, and hydrae with 11 or 12 heads do 1-10 hit points of damage.

Campaign Rule. A hydra with more than 2 active heads can choose how many heads are a primary attack (to a maximum of 4 heads) and how many heads strike iteratively (but must be at least 1). A hydra will normally select the maximum available to use as it's primary attack. In order to kill a hydra, the attacker must attack and destroy all of the hydra's heads. Each head is typically held high and can only be hit by weapons (wielded by man-sized opponents) of 8 feet in length or longer or if the hydra attacks the individual attacking it and both the hydra and it's opponent have the same group initiative (e.g. the opponent wins initiative and delays it's attack). Only one attack (not attack routine) can be made this way. Multi-headed. Hydrae are granted one saving throw per active head versus mind affecting effects. If one saving throw is successful, the hydra makes the save. Note. The DMG lists hydrae out to 16 heads in the Monster Index (p.204), and out to 20 heads in Random Encounters (p.179). Damage past 16 heads was extrapolated.

Lernaean Hydra. These creatures are very rare. The lernaean hydra is indistinguishable from a normal hydra until it is attacked.

Every time one of the heads of these creatures is cut off or killed, it grows two new ones in 1-4 melee rounds unless fire is applied to the dead member or neck stump.

Thus, a 5-headed lernaean hydra could grow to a 12-headed monster in a single combat, gaining the appropriate hit dice and attack potential in the process.

Pyrohydra. Pyrohydrae also appear quite similar to normal hydrae, although their coloration may be tinged with more red. They seldom exceed 7 heads, 10% having 8, and no 9-headed pyrohydra has ever been recorded.

Each head of a pyrohydra is able to breathe fire twice per day, the breath shooting out in a cone ½" diameter at the mouth, 1" diameter at the end, and 2" long. This fire causes 8 hit points of damage (4 if saving throw versus dragon breath is made).

They can, of course, strike normally as well.

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