Minecraft wiki entry for Powder_Snow, associated text: A player submerged in powder snow sees a frosty vignette slowly fade in at the sides of the screen and the FOV slowly decreases. When the vignette is fully shown, the player begins shivering visibly. After seven seconds (140 game ticks), the player's hearts change to a cyan frosty texture (), and the player begins taking damage at a rate of 1 HP every two seconds (40 game ticks). When an entity dies of freezing damage, a message will appear, saying [entity] froze to death. If the player leaves the powder snow block, the vignette slowly fades away. A frozen player moves slower than usual until the vignette fully fades away. This is controlled by the "TicksFrozen" data tag, which increases by 1 every tick (to a maximum of 140) for an entity within the powder snow block. It decreases at a rate of 2 per tick after the entity leaves the powder snow block. This is currently not a separate effect when used with commands such as /effect give freezing, and does not have its own unique art, particles, or potion.