Something I'm planning on using next game session: You see a Grath standing above your downed clansmen. He has her stapled to the ground, using a javelin that is shoved through her hand into the earth. You can see that she's bleeding, unconscious, probably dying.
He stares at you with hate in his eyes. Both of his hands grip a hunting spear, the point biting into Stenna's neck. You know if you move, he'll shove the spear down, through her neck, into the ground before he does anything else.
This one is feral. Consumed with...something evil. You can feel it. "One night soon," he says, in a low voice, almost a whisper, "Ollam-Onga will visit your women, and when he does, he will leave his mark."
I figure this crypitic and scary enough to get the NPC a Demoralize Other throw, under the Intimidate skill, against the PCs in range.
Plus, I plan on making his threat come true. This Ollam-Onga will wreak havoc among the villager women in the coming days--a demon set loose to play.