Summons a raging blizzard, dealing extremely high ice damage on a total of 64 squares around the caster. The spell deals about 5-10% more damage than Wrath of Nature, but its area of effect is smaller. Casting this spell puts ALL combat spells on a 4-second cooldown.
This spell, together with Wrath of Nature, replaced the old Poison Storm spell in the Winter Update 2007. Eternal Winter is considered to be more useful overall, because, even though it costs 350 mana more, it deals higher damage and many high-levelled monsters are vulnerable to ice damage. Eternal Winter is the druid's equivalent of the sorcerer's Hell's Core, compared to which it costs 50 mana less, but has a smaller area of effect and deals about 10% less damage.
Prior to the Vocation Adjustments Update, Druids could use either Eternal Winter OR Wrath of Nature. If the player had learned both, they could switch between them by speaking to Zoltan and paying 500 gp.
In the past, this spell used have a different animation: