Minecraft wiki entry for Mojang_Studios, associated text: Caller's Bane (originally known as Scrolls) is a Mojang game which was first conceived and developed by Jakob Porsér,[13] with Måns Olson and Henrik Pettersson joining later on.[14] Announced on March 2, 2011,[15] it aims to combine elements from trading card games and traditional board games in the strategy genre.