Weeping Willows have very low HPs and they are very suseptable to the spells of a Spiritmaster (both Darkness and Surpression). Very easy exp if you kill them fast. Their spells are very dangerous, sometimes their DD does upwards of 100 points to a level 26 character.
Also, they are hurt BADLY if you cast a CON debuff on them. My SM can go from needing to cast 4+ baseline Darkness DD to needing only two plus my pet wailing on it if I cast my Impair Strength.
these are awesome xp for savages, they con green to me but i can kill a camp with only end downtime, most of em 1 hit kills with a clans call. 1.5 bub + per pop, per camp, not bad for 5 mins work =)
Actually its the lvl 11 Runemaster quest and its not this one you seek but a Lone Weeping willow, spawns south from guard tower in Gna faste, near the lake