I felt like any actual number I could give here might seem too low or too high (either for the attack damage, or for the goblin's implied health), so I went with "max damage."
This unfortunately contributes to the legend of "Dan makes most dice results extremes," but I'd rather do that here than give a number that potentially takes more experienced RPG players out of the moment.
Granted, I might've done that anyway, but I tried, darn it.