Monster: Diamond Storm

Diamond Storm
Armour Class: 4
Hit Dice: 5**
Move: fly 180' (60')
Attacks: 3
Damage: 1-6/1-6/1-6
No. Appearing: 1
Save As: M5
Morale: 8
Treasure Type: L
Alignment: Chaotic
XP Value: 425

Spawned in the deepest of cold -- whether the northern wastes or the ground zero of a powerful spell of ice -- the diamond storm is part creature, part force of nature. A diamond storm appears as a great whirling mass of glittering razor-sharp snow crystals, particles of ice and bitterly cold winds, seeded through with small orbs of intensely sapphire blue. Some of these shimmering glassy orbs remain behind after the dissipation of a storm and can be highly valued as treasure depending on size, hue and clarity.

A diamond storm attacks by lashing out with icy bursts from its main mass, scoring targets with cold and slashing ice for 1-6 hit points of damage per strike. Every three rounds it may create a burst of deepfreeze in a 40' diameter, coating every non-living surface with a slick patina of ice that causes all attempting to move -- let alone attack -- to fall prone and lose a round of action on 2-in-6. A diamond storm may choose forgo all further evocation of deepfreeze's slippery effects to instead produce a layer of supernaturally cold ice that inflicts 1-2 hit points of damage per round.

Diamond storms take no damage from cold and half again as much damage from fire. Despite their resemblances, diamond storms are not elementals of any type and are not subject to attacks or spells meant to target elementals.