How would you run Haste, quickened spell in Greyhawk Initiative?

@mikemearls How would you run Haste, quickened spell and OH attack in order to make them still feel fast/slow in combat for UA initiative?

— Phillip Pereira (@pereira_phillip) July 16, 2017

I think in a revised version I'd drop die adds for extra actions https://t.co/YQjslw4zlJ

— Mike Mearls (@mikemearls) July 16, 2017