Hand Warmer

Hand Warmer is an accessory from the Christmas event and can be obtained from presents. It can be used to negate the slowing and freezing effects of the Ice Queen's "Frost Wave" and similar attacks. The Hand Warmer combined with the Ankh Shield will negate most or all of the debuffs in most pvp servers when you first login.

Trivia
This appears to be the only debuff-negating accessory that is not used as an ingredient for the Ankh Shield. This is because the Hand Warmer was implemented after the Ankh Shield was. Part of the reason may also be that the Hand Warmer is a seasonal item.