How am I supposed to use this faglord? I am playing a modified precon, WU detective deck. It's a mythic rare so I think it should be useful but the cost of his ability is so high I would rather just sacrifice the Clue itself most times. The only way to make it worthwhile is to use up all my mana which is basically costing me a turn.
What am I missing here? Is there some combo or strategy I'm not realizing? The best use I can think of this guy is to attack and tap all mana to draw cards and hope I survive next turn.