Whenever Lucian uses an ability, his next attack becomes a double-shot. After using an Ability, Lucian's next Attack within 3.5 seconds will fire two shots.
The second shot deals 35% / 50% / 65% physical damage, increased to 100% against minions. The second shot is a separate Attack that applies on-hit effects and can critical strike.
Vigilance: When healed or shielded by allied champions, or when a nearby enemy champion is immobilized, Lucian's next two attacks deal an additional 20 (+10%) magic damage (stores up to four empowered attacks).