Verified for patch 16.8.1

Trifecta II

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 scales with

Attack Speed On the Menu

Scales with bonus Attack Speed; a payoff axis for AS-stacking carries.