Set 17.0

Void Coefficient

Set 17 graves 

Each cast reduces Mana Cost by 15% (to a minimum of 10)

Source

Effects

PercentManaReductionPerCast
0.15

Void Coefficient enables

  • Mana

    The unit-level resource that gates ability casts. Mana-gen items, on-cast refunds, and starting-mana augments all key off this mechanic.

  • On Cast

    Effect fires the moment a unit casts its ability. Spellslinger / Jeweled-Gauntlet payoffs key off this.

  • Cast Frequency

    How often a unit casts its ability. Two main levers — Mana governs the cost / refunds / starting pool that gate every cast, and Attack Speed controls how fast the unit auto-attacks (each attack generates Mana). Browse those mechanic pages to see every champion, trait, item, and augment that pushes a unit to cast more often.