Visionaries: Knights of the Magical Light was an action figure toy line released by Hasbro in 1987 which consisted of twelve figures and four vehicles. The franchise also comprised an animated TV series and a comic book run. Following poor sales of the toys the line was abandoned by Hasbro, leaving series two characters, vehicles, and an action playset unproduced. The comic fared equally as bad, being cancelled after just six issues and halfway through a four-part storyline. The animated TV series lasted thirteen episodes and was not given a second series.
Below is a 1988 page from the French Cora Christmas catalogue showing the Dagger Assault vehicle and Darkling Lord character Reekon.
Check out the excellent The Visionaries .net site