TFT Set 17.6
Jax, a 2-cost Stargazer unit in TFT Set 17

Jax

2 Magic Tank 
Counter Star-ike
Enter a defensive stance for 3 seconds, reducing incoming damage by 20 / 25 / 30 and gaining 400 / 450 / 500 Ability Power Shield. When the stance ends, strike all nearby enemies, dealing Armor Magic Resist magic damage and Stunning them for 1 / 1.25 / 1.5 second(s).
Duration
3
Flat Dr
–
Shield
400 / 450 / 500% Ability Power
Damage
Armor Magic Resist
Stun Duration
1 / 1.25 / 1.5

Traits

  • Bastion 
    Your team gains 15 Armor and Magic Resist.

Bastions gain more, and the value doubles in the first 10 seconds of combat.
  • Stargazer 
    Stargazers chart a different constellation every game.

Stargazers in empowered hexes gain various bonuses, starting at (3) units.

More hexes reveal at each player level.

Jax enables

  • Stun

    Disables the target for a duration: no movement, no attacks, no ability casts.

  • Shield

    Grants temporary HP that absorbs damage before the unit's real Health is touched.

  • Flat Damage Reduction

    Subtracts a fixed amount from each instance of incoming damage. In the documented case (per the LoL Wiki's one explicit ordering statement) the flat amount comes off after Armor / Magic Resist, so it is compared to the already-resisted number, not the raw hit; whether every Set 17 source follows this exact ordering isn't stated as a single generalized rule. Because the reduction is flat rather than percent-based, an attack whose post-resist damage is below the threshold deals zero — distinct from Durability, which always lets some damage through. Set 17 sources are Jax's Counter Star-ike and Rammus's Astronaut Meep Bonus.

Jax scales with

  • Ability Power

    Scales with Ability Power (AP). Champions and effects flagged as AP-scaling get bigger damage, healing, or shield values when the holder stacks AP from items like Jeweled Gauntlet, Rabadon's Deathcap, and Nashor's Tooth, or from trait bonuses.

  • Armor

    The physical-defense stat that reduces incoming AD damage. Tank items, the Bastion trait, and champions or items that grant flat Armor all feed into this mechanic, alongside the handful of effects that scale a bonus off a unit's Armor value. Sunder is its inverse — a debuff that reduces enemy Armor.

  • Magic Resist

    The magic-defense stat that reduces incoming AP damage. Many sustain items, the Bastion frontline trait, and "Gain X Armor and Magic Resist" effects grant or scale off it; Shred is its inverse.

Hero augments

All hero augments by champion →

  • Reach for the Stars Gold 
    Gain a Jax. Your strongest Jax becomes a Magic Fighter that deal bonus magic damage on attack and gains stacking Attack Speed on cast.