Feel the power of Ice

Ice Storm - Creates a targeted lasting freezing area of effect.

Effect

Range - 20
Cooldown: 12 seconds
10% Chance to consume reagents
Duration: 6.1 seconds
0 - 3 Water Damage every 2 seconds for 14 seconds (increases with skill gain)
-30.3 Movement Rate for 5.2 seconds (increases with skill gain)

Skill: Water Magic Glyph
Focus Cost: 36
Prerequiste Skill - Shield of Ice (40)
Reagents: Nightshade x 1; Mandrake Root x 1; Spider Silk x 1; Serpent Scale x 1

This is based on information from Sotawiki for the Ring of Fire spell.

The water magic tree does not have any Area of Effect attack spells like Ring of Fire, Earthquake, Death Field, Chain Lightning. So here is my idea for an AoE spell for the water tree.