Frostburn

Frostburn debuff causes you to lose 6 life per second and negates health regen. As of 1.2.3 this has been doubled to 12 life per second. No monster inflicts this status and can only be received in PVP combat.

Immune NPCs
Bosses:
 * The Destroyer
 * Mourning Wood
 * Duke Fishron

Other:
 * Hellhound
 * Ice Elemental
 * Ice Golem