Agents of Artifice, a media tie-in novel set in the Magic: The Gathering Planeswalkers game-setting, and published by Wizards of the Coast, followed in November 2009.
[3] Library Journal wrote that it "fills a vital niche in the fantasy adventurer genre, one occupied by the heroes of Michael Moorcock's Elric Melniboné novels and C.S.
[6] Notable short stories from Marmell include "The Flight of the Righteous Indignation" from Tales of the Last War (Wizards of the Coast, April 2006), "The Ogre’s Pride," (a tie-in to The Conqueror's Shadow (originally published in Spectra Pulse, April 2010), and "Twenty-One-Oh" from the multimedia anthology, Foreshadows: The Ghosts of Zero (Blindsided Books, February 2012).
He has written extensively for the role-playing game industry, including White Wolf Publishing[9] and Wizards of the Coast.
Dungeons & Dragons supplements for which he has written include: Marmell was born in New York State, but moved to Houston, Texas when he was one year old.