Your search for "Rakdos Cluestone 143" revealed the following:
Rakdos Cluestone (DGM) from Dragon's Maze, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Raoul Vitale Card Text:T: Add B or R to your mana pool.BR, T, Sacrifice Rakdos Cluestone: Draw a card.
Rakdos Cluestone (Foil) (DGM) from Dragon's Maze, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Raoul Vitale Card Text:T: Add B or R to your mana pool.BR, T, Sacrifice Rakdos Cluestone: Draw a card.