Dota 2/Etherain the Lich

Frost Blast
Frost Blast chills the targeted unit, damaging and slowing the movement and attack speed of it and enemies near it. A simple but effective slow, it is a great harassing tool as well as a disable to slow the enemy's escape. With a short cooldown, it can be casted repeatedly as long as you have the mana to do it.
 * Ability: Target Unit
 * Affects: Enemy Heroes
 * Damage Type: Magical
 * Damage: 50 / 100 / 150 / 200
 * Area Damage: 75 / 100 / 125 / 150
 * Radius: 200
 * Movement Slow: 30%
 * Attack Slow: 20%
 * Mana Cost: 125 / 150 / 170 / 190
 * Cooldown: 9.25 / 9.25 / 9.25 / 8