Ryze gains Arcane Mastery for 6 seconds every time he uses an ability, stacking up to 5 times.
At 5 stacks, Ryze becomes supercharged for 2.5 - 5 (based on Overload's Rank) seconds, gaining a shield that blocks 25 - 110 (based on level)(+ 8% maximum mana) damage and causing his ability casts to reduce his other ability cooldowns by「 Overload's cooldown 」「 4 - 2.2 」.
Arcane Mastery is a passive ability that triggers whenever Ryze casts an ability (applies at the end of spells' cast time) .
After striking the target, the orb splits and bounces to Ryze and enemies near the target, dealing the same damage to each enemy hit, capped at 6 targets. The secondary orbs then bounce back to the primary target, dealing half of the initial damage.