Every 18 seconds, Lissandra's next ability costs no mana. Cooldown reduction does not affect Iceborn, but the cooldown is reduced by 1 second whenever Lissandra impairs an enemy's movement with an ability (does not apply to movement-impairing effects from items).
Cooldown: 6 / 5.5 / 5 / 4.5 / 4
Cost: 85 mana
Active: Throws a spear of ice that travels in a line and shatters when it hits an enemy, dealing magic damage and slowing its movement speed for 1.5 seconds. Shards then pass through the target, dealing the same damage to other enemies hit (but not slowing them).