Combo/combined power attacks exist in D&D?

@Trogaf @ChrisPerkinsDnD @JeremyECrawfordCombo/combined power attacks exist in D&D?
Like Crono Trigger, or fastball special type move? not yet – I'd run them ad hoc as DM. Hard to design assuming party takes stuff. #WotCstaff

— (((Mike Mearls))) (@mikemearls) October 15, 2016