Those touching the coins risk being cursed by Nimaruth. They must make a wisdom saving throw (DC 15) or be overtaken with an overwhelming fear of rats, mice, and other furry vermin. Cursed individuals have the Frightened condition while in the presence of rodents. This curse lasts until a Remove Curse spell is cast on the victim.
Scion of Nimaruth
Armor Class 17 (natural AC, dexterity)
Hit Points 69 (6d10+36)
Speed 30, Climb 15
STR DEX CON INT WIS CHA
20 (+6) 19 (+5) 20 (+6) 8 (-1) 14 (+2) 12 (+1)
Saving Throws + 9 Str, + 9 Con
Skills athletics +9
Senses darkvision 60 ft., passive Perception 15
Languages Common, Abyssal, Infernal
Challenge 3 (700 XP)
Cull the Weak. When the Scion of Nimurath hits a creature with a weapon attack, the creature takes an additional 1d6 damage if it's below it's hit point maximum.
Bite. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 13 (2d6+6) piercing damage. If the target is a creature it must succeed on a DC 15 Constitution saving throw against disease or because poisoned until the disease is cured. Every 24 hours that elapse, the target must repeat the saving throw, reducing his hit point maximum by 5 (1d10) on a failure. The disease is cured on a success. The target dies if the disease reduces his hit point maximum to 0. This reduction to the target's hit point maximum lasts until the disease is cured.
Rat Swarms (2)
Use Swarm of Rats stats from Dungeon Master's D&D Basic. Within sight of the Scion of Niramuth the rat swarms also gain Condition Immunity: Charmed, Frightened.