Planescape - Well of Worlds

From the back cover:

Clueless? The majesty and the dark got you down, cutter? Don't know how to lead a green prime to water? Then worry no more! The Well of Worlds is the answer to every basher's pleas for introducing gamers to the planes. The chant is:

Nine new adventures; a poster map of the planes (depicting Avernus, the first layer of Baator); a slew of magical items; and excitement!

Face off against a crazy king or steal a factol's better weapon--The Well of Worlds gives hours of play. It's designed for any plane-traveling party, with adventures for low-, medium-, and high-level characters. (An' if that ain't enough for ya, then pike it, berk!)