Druid is a neat overhead magic action game developed by Electralyte Software for Firebird Software and published in 1986.
Druid is a Gauntlet-like maze game in essence, with you playing a druid character and fighting your way through waves of monsters to defeat the end baddie (dark mage Acamantor). Graphically, the game is quite nice, and it plays pretty good too.
Druid has appeared on a number of different platforms although this Commodore 64 original is arguably the best.
More: Druid on Wikipedia