If I roll a successful attack roll, then a damage roll that is greater than the remaining HP of a monster, do I have to apply all of it or can I leave him at 1 or even 0 HP? It doesn't Instant Kill him.
Basically, I want to interrogate the goblin at the beginning of the starter set for 5e and he only has 1 HP left before I roll this hypothetical roll.
Do I have any other options? (such as a capture or something like that)