Having a bit of an issue in our group. Can you cast a centrino as a bonus action after casting a level 1 spell or higher? Assuming centrino = cantrip, yes
— Mike Mearls (@mikemearls) April 5, 2018
And yes I meant cantrip! Damn autocorrect!
— LastStarFtr (@LastStarFtr) April 5, 2018
Hang on, that’s incorrect. If you cast a cantrip as a bonus action (how? lacking Quickening, only 2 cantrips have a casting time of 1 bonus action, plus Grave domain granted Spare the Dying) then the only other spells you can cast are cantrips with a casting time of 1 action. This applies both ways, so once you use your action to cast a levelled spel, you cannot use your bonus action to cast a spell.