giant two-tailed rat for dungeons and dragons DND

Two-Tailed Giant Rat

These rats have been exposed to unstable magic, toxic waste, or evolved in strange environments, resulting in abnormal growth and a mutated two-tailed form that grants them surprising agility and balance. They are often more aggressive than normal giant rats and move in packs.

Creature Type: Beast
Alignment: Unaligned
Armor Class (AC): 13 (Natural Armor)
Hit Points (HP): 14 (4d4 + 4)
Speed: 30 ft., Climb 10 ft.

STATS

| STR |    DEX |       CON      | INT        | WIS        | CHA |
| 7 (-2)   | 15 (+2)   | 12 (+1  ) | 3 (-4)    | 10 (+0) |    4 (-3) |

Saving Throws: Dexterity +4

Skills: Perception +2, Stealth +4

Senses: Darkvision 60 ft., Passive Perception 12

Languages: ---

Challenge (CR): 1/4 (50 XP)

Special Features:

Keen Smell: The rat has advantage on Wisdom (Perception) checks that rely on smell.
Two-Tail Agility: The rat has advantage on Dexterity saving throws.
Pack Attack (Pack Tactics): The rat has advantage on an attack roll against a creature if at least one of the rat's allies is within 5 ft. of the creature and the ally isn't incapacitated.
Disease Carrier: If the rat deals damage to a creature, the target must succeed on a DC 11 Constitution saving throw or contract a disease. Until the disease is cured, the target takes 1 point of necrotic damage at the start of each of its turns. The target can repeat the saving throw at the end of each long rest, curing itself of the disease on a success.

Actions:

Bite: Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) piercing damage.

How to Use in D&D:

Encounters: They are perfect for:
Sewers and drains: Where mutations are common.
Abandoned ruins: Places with residual energies.
Goblin or kobold camps: Used as pets or pests.
Forests or caves near contaminated areas: Result of magical or industrial intervention.
Tactics:
Ambush: Thanks to their Stealth and Darkvision.
Swarm: They always appear in groups to take advantage of their Pack Attack.
Disease Impact: Their main threat is the possibility of spreading disease, which can wear down the group in the long run if left untreated.
Agility: Their high Dexterity and Two-Tails Agility make them surprisingly difficult to hit and trap with area effects.

Variants and Scaling (Optional):

Giant Two-Tailed Rat "Alpha" (CR 1):
HP: 30 (7d4 + 14)
Strength: 9 (-1), Constitution: 14 (+2)
New Action: Two-Tail Lash: Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) bludgeoning damage. If the target is a Small or Medium creature, it must succeed on a DC 10 Strength saving throw or be knocked prone.
Mutagenic Disease: Instead of just necrotic damage, the disease might cause a minor but persistent effect, such as disadvantage on Charisma checks or -1 to an ability score, until it is cured.
Two-Tailed Shadow Rat (CR 1/2):
Type: Beast (or Aberration)
Has resistance to necrotic damage.
It can use its action to attempt to hide even if it is in plain sight of a creature, as if it were a shadow (Perception DC 14 to detect it).