Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Ninja Tabi - good for speed and it gives a 12% dodge which helps Jax's dodge ability (+25 Armor), (+12% Dodge) & (Enhanced Movement 2)
Rageblade - Gives a triple bonus due to Jax's passive ability (+35 Attack Damage),(+45 Ability Power) & (185 health points). This also stacks up to 8 times all in all a great item for Jax's
Mejai's Soulstealer - I like this item as it stacks the more kills you get, in a way it helps motivate me to kill.(+20 Ability Power) & (+40 health points)
Sunfire Cape - personally I was undecided about this item, but it works for me not only does it give a nice boost to your health and armour but it has a handy attack. Seeing as Jax can dodge alot of attack, he can remain in combat for a long him, this helps to kill of heros & minons (+450 health points)), (+45 Armor) & (Deals 40 Magic Damage a second to nearby enemies.)
Tiamat - This item is great it gives a splash damage, when combined with Jax's abilities it works well with Empower and Counter Strike. (+50 Attack Damage), (+15 HP Regen/5 sec.), (+5 Mana Regen/per 5 sec.), (+150 health points) & (Your attacks splash, dealing physical damage in a small area around the target(50% for melee, 35% for ranged).)
The Bloodthirster - This not only gives a boast to health, and damage but gives Jax a handy life steal when this is stacked up he is just about unkillable(+60 Attack Damage), (+15% Life Steal), (+180 health points) & (Gain an additional 1 Physical Damage and 0.25% Life Steal per kill. Maximum of +40 Damage and +10% Lifesteal. Bonuses are lost upon death. )