@JeremyECrawford Phantom Steed: Regardless of how the spell ends, it lasts for one more minute as it fades away, correct? Can be ridden?

— Charles Sturges (@CharlesSturges) October 19, 2016

RAW: you can ride a phantom steed only during its duration, not during the 1-minute fade. But a DM breaks nothing by ruling otherwise. #DnD https://t.co/Dk9I5ADgJy

— Jeremy Crawford (@JeremyECrawford) October 19, 2016