Talk:Charms/@comment-184.90.183.204-20151027195211/@comment-2605:A000:140C:8564:6033:1033:3742:B4EF-20180124000404

Ice and Storm damage are instantaneous, and they also improve your damage & DPS as well as causing slow and stun effects, respectively, I believe.

Winter is rarer than Storm, but  they're both valuable and somewhat rare,  so always remove them from items. Because of Winter's rarity, people tend to focus on just getting Storm but I believe that getting one of each to 10 is better - although I don't know if their impact on damage & DPS is identical, so it may be that one is better.