Weeping is amazing. A simple weeping orcish spear can slay stone giant lords and such in a couple of turns.

My recent best ego item(s) was a stack of 17 penetrating eternium quarrels of slaying...

...dug up on Griffyard by a duelist.

Also my recently deceased archer had a nice mithril short sword of devastation that made swords of sharpness look like shaving utensils.