Jax

Innate: Jax's basic attacks generate a stack of Relentless Assault on-attack for 2.5 seconds, refreshing on subsequent attacks and stacking up to 8 times. Stacks expire by one every 0.25 seconds when the duration ends.
Relentless Assault: For each stack, Jax gains 3.5% − 11% (based on level) bonus attack speed, up to a maximum of 28% − 88% (based on level).
Grandmaster at Angling: While out-of-combat with champions and idle in the river for 10 seconds, Jax will occasionally catch a fish, granting him 1 and 1 ability power for 5 seconds. He catches a fish at an average rate of one every 15 seconds. He also has a 5% chance to catch a rare fish that grants 10 and 10 ability power for 5 seconds.

Jax leaps toward a unit. If they are an enemy, he strikes them with his weapon.

Jax charges his weapon with energy, causing his next attack to deal additional damage.

Jax's combat prowess allows him to dodge all incoming attacks for a short duration and then quickly counterattack, stunning all surrounding enemies.

Every third consecutive attack deals additional Magic Damage. Additionally, Jax can activate this ability to deal damage around himself and strengthen his resolve, increasing his Armor and Magic Resist for a short duration.