Mod of Redemption/Niric Core

The Niric Core is a Pre-Hardmode. When equipped, it grants 5% increased ranged damage, immunity to all cold debuffs, boosts to all stats while in the Snow biome and your strength is even more boosted during a Blizzard. However, your life regen is nullified in the Desert and you will slowly lose life while in the Underworld.

Tips

 * Although it is not intended to be used like a normal accessory, equipping it while in a Snow biome and removing it elsewhere can be helpful, due to the boosts the accessory gives.