Iceforged Colossus | Free D&D 5e Monster

Built from flawless ice and covered in glowing runes, the Iceforged Colossus is an ancient guardian created to protect sacred places and long-buried secrets. This CR 4 construct can disappear into icy surfaces, reshape the battlefield with frozen terrain, and blast enemies with glacial breath, making it a strong fit for arctic ruins, frozen temples, and other cold-weather adventures.

This monster comes from Lairs & Legends 3, which is packed with ready-to-use encounters, traps, puzzles, magic items, NPCs, and other resources you can drop directly into your D&D  5e game.

Iceforged Colossus

Rising with majestic might, the iceforged colossus is a massive guardian, dwarfing its sentry counterparts. Crafted from unblemished ice and etched with powerful, glowing runes, it is a remnant of a time when Polarnox, the god of the Northern Lights, walked the frozen lands, creating ice-hewn servants to defend ancient and sacred secrets.

2024 Modification. The colossus uses any two of its actions as part of its multiattack, including its glacial breath if available.

Iceforged Colossus

Large construct, unaligned

Armor Class 16 (natural armor)

Hit Points 76 (8d10 + 32)

Speed 30 ft.

Damage Immunities cold, poison, psychic

Condition Immunities charmed, exhaustion, frightened, paralyzed, poisoned

Senses darkvision 120 ft., passive Perception 11

Languages understands Aurorian but can’t speak

Challenge 4 (1,100 XP)           Proficiency Bonus +2

Immutable Form. The iceforged colossus is immune to any spell or effect that would alter its form.

Ice Aura. Creatures that start their turn within 10 feet of the iceforged colossus take 3 (1d6) cold damage.

Actions

Multiattack. The iceforged colossus makes two slam attacks or makes one slam attack and uses Meld into Ice or Icecraft.

Slam. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 13 (1d12 + 6) bludgeoning damage plus 5 (1d10) cold damage.

Meld into Ice. The iceforged colossus can meld into an icy surface it touches, becoming invisible. It remains in this state until it moves or takes an action or reaction.

Icecraft. The iceforged colossus can freeze a 15-foot-square patch of water or ground within 30 feet of it. This area becomes difficult terrain and lasts for 10 minutes.

Glacial Breath (Recharge 5-6). The iceforged colossus exhales a blast of freezing air in a 30-foot cone. Each creature in that area must make a DC 14 Constitution saving throw, taking 14 (4d6) cold damage on a failed save, or half as much damage on a successful one.

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Want More Monsters Like This?

The Iceforged Colossus comes from Loot & Lore 3, part of my Lairs & Legends 3 GM resource series.

If you want more ready-to-use monsters with interesting abilities, tactics, and encounter concepts already built into them, Loot & Lore 3 gives you a massive collection of material you can drop directly into your D&D campaign. You'll also find encounters, traps, puzzles, magic items, and other resources designed to make your prep easier.

And when you need complete adventures instead of individual pieces, Lairs & Legends 3 gives you ready-to-run adventures you can prepare quickly and bring straight to the table.

Together, Lairs & Legends 3 and Loot & Lore 3 are designed to help you spend less time creating everything from scratch and more time running great D&D.

👉 Check out Lairs & Legends 3 and Loot & Lore 3