Trifecta II

Prismatic augment

Gain 3 3-cost champions. Allies gain 5% Attack Speed. 
Combat Start: 3 random 3-cost champions gain 300 Health and 25% Attack Speed.

Effects

AttackSpeed: 0.25
BuffedNumber: 3
Health: 300
NumUnits: 3
TeamAttackSpeed: 0.05
Tier: 3

Trifecta II enables

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.