Noble with Hail of Doom arrow is one of the few reasons I take scouts. Scout Noble with Light Armor, Shield, Extra hand weapon, Helm of the Hunt(HotH) and Hail of Doom Arrow (HoDA) in a unit of 5 Scouts makes for a decent surprise and the character can hit WMs fairly hard as well. I've been tempted to try it with 5 Way Watchers for better WM hunting, but that's twice as much and not core. We'll see next time I have the chance.
Dryads with the Lore of Beasts behind them are down right frightening. S/T5 with 2 attacks base! That being said, units of 8 make for great shock troops or mage hunters. If you lose them, that's less than 100 points, so who cares because that means your Trees/Archers aren't getting hit.