Deals AoE damage and interrupts the actions of enemies, lowering their attack speed and immobilizing them. Casting this skill puts the field into winter, transitioning with each cast from early winter to deep winter and then dead winter. Early Winter: Raises AD & AP of Frost Elf heroes and lowers enemy attack & movement speed. Deep Winter: Boosts Frostbite. Increases B's attack speed. Dead Winter: Boosts Frost Nova. Increases B's physical lifesteal.