The Frost Witches of the northern reaches of the Vale are part of a decades long infiltration of the region by a powerful ice demon by the name of Cryonax. Through pacts with various humanoids, Cryonax gains agents and spies who spread his power, influencing others and gathering new recruits. Some are locals drawn into service to the demon lord, while others are children who show an innate talent for magic and are kidnapped and indoctrinated into the fold.
The most powerful gift Cryonax has given the Frost Witches is a minor artifact, the Frozen Cauldron. Through this cauldron the witches may communicate with their patron, conjure magical defenders and assistants, and perform other rituals to spread Cryonax’s will. Icicle swarms are one of the defenders the cauldron can summon, elemental energy infused into shards of broken ice that obey the instructions of any of the witches.
Originally from the 4e Monster Vault: Threats to the Nentir Vale. This post came out a week ago on my Patreon. If you want to get access to all my monster conversions early, as well as a copy of my premade adventure Rampage of the Map Backed Spider, consider backing me there!
5th Edition
Icicle Swarm
Medium swarm of Tiny elementals , unaligned
Armor Class 13
Hit Points 55 (10d8 + 10)
Speed 0 ft., fly 30 ft. (hover)
Str 13 (+1) Dex 16 (+3) Con 12 (+1) Int 8 (-1) Wis 10 (+0) Cha 6 (-2)
Damage Immunities cold, poison
Damage Resistances bludgeoning, piercing, slashing
Damage Vulnerabilities fire
Condition Immunities blinded, charmed, frightened, grappled, paralyzed, petrified, poisoned, prone, restrained, stunned, unconscious
Senses blindsight 60 ft. (blind beyond this radius) passive Perception 10
Languages Aquan, Auran, Primordial
Challenge 3 (700 XP)
Freezing Passage. The first time the swarm enters a creature’s space on a turn, that creature takes 3 (1d6) cold damage.
Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny icicle. The swarm can’t regain hit points or gain temporary hit points. Additionally, the swarm doesn’t provoke opportunity attacks when it flies out of an enemy’s reach.
Actions
Icicle Stab. Melee Weapon Attack: +5 to hit, reach 0 ft., one creature in the swarm’s space. Hit: 14 (4d6) piercing damage or 7 (2d6) piercing damage if the swarm has half of its hit points or fewer.
13th Age
Icicle Swarm
3rd level troop [elemental]
Initiative: +8
Icicle Stab +8 vs. AC (1d3 engaged enemies) – 3 damage plus 3 cold damage
Natural Even Hit or Miss: The icicle swarm can pop free from the target.
Natural 18+: The target is also stuck (save ends).
Flight.
Swarm Attack: An enemy that ends its turn engaged with the icicle swarm takes 2 cold damage.
Resist Damage 16+.
AC 17 PD 16 MD 13 HP 36
Writing and Rolling 