Terraria Overhaul/Coldburn

Coldburn is a Debuff that grants immunity to heat debuffs, while heavily increasing duration of all cold debuffs.

It also causes players to always get the Chilled debuff upon entering water, or if they have the Wet debuff.

Trivia

 * This debuff's internal name is AbsoluteZero, and it may be renamed to that at some point.