This isn't the Triumph you wanted, it's the Triumph you needed. 

The spectator signs a card, it's lost in the deck, then the spectator shuffles the cards face up into face down. The cards are immediately spread and all of the cards face the same direction except for the one bearing their signature. 

This fantastic routine from Nathan Kranzo puts all of the things we want out of this classic effect in the hands of the spectator. It's extremely easy to do, and the presentation makes the method totally fly past your audiences. Best of all this can be done with a borrowed deck that is in any condition. 

The next time a friend hands you a dog eared deck that is beyond worn out, Dark Triumph is here to save the day.