We used to have a saying that "Even a thousand pixies can bring down the biggest giant. Since we've just started playing, I'm stuck with finding a way for an angry mob (or its equivalent) to bring down a single party member.
I'm not talking a 5 or 10 beasties or villagers, which should be played out in normal combat. I'm talking "You see a hoard of skeletons rushing you from all directions, with the words 'Bring them to me alive, my children!' echoing from the darkness beyond." Also think every zombie movie you ever saw where some poor twit gets dragged off screen screaming because he's outnumbered 20 to 1.
And, yes, size does matter here. A swarm of goblins might want to take you home to meet mother, who likes her food really fresh. Again, 20 to 1 (or more) is a lot of little hands to bring you down, but they won't have as easy a time as 20 villagers.
I really don't want to deus ex machina this one. Suggestions, please???