TFT Set 17.6
Diana, a 3-cost Arbiter unit in TFT Set 17

Diana

3 Magic Fighter 
Pale Cascade
Passive: Attacks deal 52 / 78 / 135 Ability Power bonus magic damage.

Active: Gain 275 / 325 / 475 Ability Power Shield and summon 3 encircling orbs for 3 seconds. Orbs deal Ability Power  magic damage to enemies they pass through, and rotate faster based on Attack Speed.
Bonus Attack Damage
Ability Power
Shield
Ability Power
Shield Duration
3
Damage
Ability Power

Traits

  • Arbiter 
    Scribe a unique divine law, allowing you to choose an effect to apply to Arbiters when a chosen cause occurs.
  • Challenger 
    Your team gains 10% Attack Speed. Challengers gain bonus Attack Speed. When their target dies, Challengers dash to a new target and increase their Attack Speed bonus by 50% for 2.5 seconds.

Diana enables

  • Shield

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

  • Summon

    Adds a unit to the field — temporary or permanent. Covers ability summons (pets and minions like Fizz's Mega Meeps), trait-spawned minions and relics (Shepherd's Bia and Bayin, Bulwark's placeable relic, Primordian Swarmlings), resurrect/revive of fallen allies, and bench-to-field arrivals (the Thresh's Lantern artifact flings a benched unit onto the board). Summon-buff augments scale these. Bench refers to expanding bench slots, not the act of summoning; clone refers to making an exact copy of an existing unit, not summoning a new entity.

Diana scales with

  • Attack Speed

    Bonus Attack Speed makes a unit attack more often per second, which means more auto-attack damage and faster mana generation toward the next ability cast. Some carries scale beyond that — their ability itself fires more hits when they have more Attack Speed (e.g., Bel'Veth's slash count, Jinx's rocket count). Stacking AS items and traits on these units compounds: faster autos, faster casts, and bigger casts.

  • 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.