Sion has a 40% chance to ignore up to 30 / 40 / 50 damage each time he is hit by an autoattack. The damage reduction is calculated before armor and percentage damage reduction benefits are taken into account.
Cryptic Gaze
Range: 550
Cooldown: 12 / 11 / 10 / 9 / 8
Cost: 100 Mana
Active: Sion's gaze terrifies a single enemy, dealing magic damage and stunning it for 1.5 seconds.
Active: Sion surrounds himself with a shield which absorbs damage for up to 10 seconds. After 4 seconds, if the shield has not been destroyed, the ability can be cast again to explode and deal magic damage to surrounding enemies. It will explode automatically after the 10 seconds have passed.
Toggle: Each of Sion's autoattacks will deal extra physical damage at the cost of some health. While Enrage is active, Sion permanently increases his maximum health whenever he kills a unit with either his attacks or abilities.
Extra Physical Damage: 25 / 35 / 45 / 55 / 65
Health Gained per kill: 1 / 1.5 / 2 / 2.5 / 3
Cannibalism
Cooldown: 90
Cost: 100 Mana
Active: For 20 seconds, Sion gains bonus lifesteal and 50% attack speed. Additionally, Sion's autoattacks will heal surrounding allies for a percentage of the damage dealt.
1350 or 
585
