Help making a sliver eldrazi deck?

Not going to happen. You have too many different kinds of lands, too many non-slivers and non-eldrazi. You need to up the count on the forests and the gemHIDE slivers because they let you tap for mana. Get rid of the spires and ziggurats, as the spires set you way too far back and the zigg is useless on anything but creatures. You need to remove the signet and add two more hivestones, or just make your entire deck slivers as slivers work the best on their own.