are magic weapons like Frost Brand meant to be paired with a +1-+3 weapon

Is an undead considered a “Living creature”?

Can a warlock/sorcerer covert warlock spell slots to sorcery points?

Is Magic Missile an attack that hits without an attack roll?

Is Sacred Flame the only offensive Cantrip for Clerics?

In Xanathar’s Guide to Everything you can also find “Toll the Dead” and “Word of Radiance