I've been trying to work LED into a deck and am trying it in a zombie deck with lots of tutors to search for a high mana cost card after using the LED. Any Thoughts?

http://deckbox.org/sets/334769

That deck is screaming for Isochron Scepter. Your biggest problem will be getting a Tutor out after discarding your hand to the Lion's Eye Diamond, and that is solved by the Scepter. However, I think the LED may be more of a hindrance than a help with this deck.

If you really want to work the LED into a deck, the best combo I've seen involves Grindstone and Painter's Servant to mill them on turn 1 (also requires a Dark Ritual to pull first turn):

Drop LED. Drop land. Drop Dark Ritual. Drop Grindstone. Drop Painter's Servant. Snap LED to pay for Grindstone's activation. Win.