That's a fair argument, but preferably you've got meat sacks in the party to prevent that. But you're right, if you're solo-ing a bunch of mooks, Sleep isn't for you.
True. And that's why there are other spells!
Originally Posted by RodrigoAlves
Once a player almost fell into a trap full of spikes. He asked me "how much damage would a spike do?"
I said "Instant death"
Then, he grabbed a spike and used it as a weapon for the rest of the adventure.