Varus can still move while channeling, but can't autoattack or use his other abilities, and his movement speed is slowed by 20%. After 4 seconds, Piercing Arrow is automatically cancelled, going on full cooldown and refunding half of its mana cost.
Second Cast: Varus fires, dealing physical damage to all enemies in the arrow's path, reduced by 15% per enemy hit (down to a minimum of 33%).
Slows will linger for .25 seconds after leaving the marked area.
Chain of Corruption
COST: 100 mana
COOLDOWN: 120 / 105 / 90
Active: Varus flings out a tendril of corruption that infects the first enemy champion hit, dealing magic damage and rooting them for 2 seconds.
Projectile Speed: 2000
Magic Damage: 150 / 250 / 350 (+ 100% AP)
The corruption then attempts to spread towards enemy champions within 550 range, applying the same damage and root if they stay within 600 range of the infected champion for 2 seconds. The corruption will continue to spread until there are no further targets in range, but each champion may only be infected once per cast.