https://youtu.be/wFI2cVXQp74 Listen / download here: Whether you know him from his hundreds of titles as a voice actor, his fan-favorite role as Dungeon Master on Critical Role, or just for being an all-around "Charismatic Bastard", there's a great chance you're familiar with contemporary pop culture icon Matt Mercer. What you may not know is that Mercer can now add "Published Author" to his business card thanks to his collaboration with Dungeons & Dragons publisher Wizards of the Coast for an all-new campaign guide. We chatted with veteran voice actor and D&D …