Question about an item from XtGE, the Ruby of the War Mage. If it is attached to a Longsword +1, will that +1 apply to spell attacks also? No.
— Jeremy Crawford (@JeremyECrawford) December 20, 2017
Ruby of the War Mage: If it is attached to a Longsword +1, will that +1 apply to spell attacks also?
