Queen Qunilaria is a giant burrowing horror in Tur Suil, past Abomos. Easiest way to navigate the tunnels (once you find the tunnels, that is) is
to stay to the right every time the path branches. When she dies, she drops 3 things every time, some unique stats, some fixed stats with glowing effects. Also, upon her death she scatters a lot (about 20) little copies of herself that are ylw/oj/red to 50.