The writer got mad when a goblin shoved Astarion off a cliff. It reminded me of when I had Karlach shove a goblin in lava, then a goblin ran up and shoved HER in the lava. I didn’t get mad; I took it as a learning moment: enemies can shove me back, so move away from the lava.
Cantrips are just spells that don’t use spell slots. No further explanation needed
And this info is nowhere.
It’s in the game, I’ve never played 5e and I knew that since I’ve started playing.