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Giant Poisonous Snake Variant: Diseased Giant Rats
Medium beast, unaligned Some giant rats carry vile diseases that they spread with their
bites. A diseased giant rat has a challenge rating of 1/8 (25
Armor Class 14 XP) and the following action instead of its normal bite attack.
Hit Points 11 (2d8 + 2) Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one
Speed 30 ft., swim 30 ft. target. Hit: 4 (1d4 + 2) piercing damage. If the target is a
creature, it must succeed on a DC 10 Constitution saving
STR DEX CON INT WIS CHA throw or contract a disease. Until the disease is cured, the
target can’t regain hit points except by magical means, and
10 (+0) 18 (+4) 13 (+1) 2 (−4) 10 (+0) 3 (−4) the target’s hit point maximum decreases by 3 (1d6) every 24
Skills Perception +2 hours. If the target’s hit point maximum drops to 0 as a result
of this disease, the target dies.
Senses blindsight 10 ft., passive Perception 12
Languages — Giant Scorpion
Challenge 1/4 (50 XP)
Large beast, unaligned
Actions Armor Class 15 (natural armor)
Bite. Melee Weapon Attack: +6 to hit, reach 10 ft., one Hit Points 52 (7d10 + 14)
target. Hit: 6 (1d4 + 4) piercing damage, and the target Speed 40 ft.
must make a DC 11 Constitution saving throw, taking
10 (3d6) poison damage on a failed save, or half as STR DEX CON INT WIS CHA
much damage on a successful one. 15 (+2) 13 (+1) 15 (+2) 1 (−5) 9 (−1) 3 (−4)
Senses blindsight 60 ft., passive Perception 9
Giant Rat
Languages —
Small beast, unaligned
Challenge 3 (700 XP)
Armor Class 12
Hit Points 7 (2d6) Actions
Speed 30 ft. Multiattack. The scorpion makes three attacks: two
with its claws and one with its sting.
STR DEX CON INT WIS CHA
Claw. Melee Weapon Attack: +4 to hit, reach 5 ft., one
7 (−2) 15 (+2) 11 (+0) 2 (−4) 10 (+0) 4 (−3) target. Hit: 6 (1d8 + 2) bludgeoning damage, and the

Senses darkvision 60 ft., passive Perception 10 target is grappled (escape DC 12). The scorpion has two
claws, each of which can grapple only one target.
Languages — Sting. Melee Weapon Attack: +4 to hit, reach 5 ft., one
Challenge 1/8 (25 XP) creature. Hit: 7 (1d10 + 2) piercing damage, and the
target must make a DC 12 Constitution saving throw,
Keen Smell. The rat has advantage on Wisdom taking 22 (4d10) poison damage on a failed save, or
(Perception) checks that rely on smell. half as much damage on a successful one.
Pack Tactics. The rat has advantage on an attack roll
against a creature if at least one of the rat’s allies is Giant Sea Horse
within 5 feet of the creature and the ally isn’t Large beast, unaligned
incapacitated.
Armor Class 13 (natural armor)
Actions Hit Points 16 (3d10)
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one Speed 0 ft., swim 40 ft.
target. Hit: 4 (1d4 + 2) piercing damage.
STR DEX CON INT WIS CHA

12 (+1) 15 (+2) 11 (+0) 2 (−4) 12 (+1) 5 (−3)

Not for resale. Permission granted to print or photocopy this document for personal use only. System Reference Document 5.1 378