@SoulofTwhitq for multi eldkngt/arctrcstr: ch6 says slots as 1/3 lvl of chart, rnd down. Class lists use 1/3 rnd up, eg lv3 spell @ 13? Use chapter 6's calculation for your fighter/rogue's spell slots.
— Jeremy Crawford (@JeremyECrawford) January 21, 2015
@SKretsingerif an eldritch knight is concentrating on a spell and uses action surge to make an attack, is the spell concentration broken? no, concentration is broken only if you do something else that requires it or fail your saving throw after taking damage
— Mike Mearls (@mikemearls) October 14, 2014