Jayce Ability (LoL): Thundering Blow / Acceleration Gate

Mercury Hammer: Jayce swings his hammer, knocking back and rooting his target during the cast time and dealing 8 / 10.8 / 13.6 / 16.4 / 19.2 / 22% of target's max health (+1.0 per bonus attack damage) magic damage.

Mercury Cannon: Jayce deploys an acceleration gate for 4 seconds that grants 30 / 35 / 40 / 45 / 50 / 55% movement speed decaying over 3 seconds to allied champions that pass through it.