@JeremyECrawford can the extra action granted by Haste be used to activate a magic item?
— Alvin Ty Law (@alvintylaw) August 25, 2015
No. Activating a magic item isn't a function of the Use an Object action (DMG, 141). https://t.co/PuGBkS3yfm
— Jeremy Crawford (@JeremyECrawford) August 25, 2015