Your search for "Gruul Cluestone 140" revealed the following:
Gruul Cluestone (DGM) from Dragon's Maze, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Raoul Vitale Card Text:T: Add R or G to your mana pool.RG, T, Sacrifice Gruul Cluestone: Draw a card.
Gruul Cluestone (Foil) (DGM) from Dragon's Maze, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Raoul Vitale Card Text:T: Add R or G to your mana pool.RG, T, Sacrifice Gruul Cluestone: Draw a card.