May be hard to find a slot, but maybe Descendants' Path

Nice! I'll prolly ditch Cloudpost for that. Thanks for the suggestion! Kamisma

Dormant Sliver because he makes your board appear less threatening while you draw for days and then sac him and swing for game. Harmonic Sliver for getting rid of your opponent's enchantments and artifacts. And maybe Sidewinder Sliver instead of Spined Sliver.

solid suggestions. thank you.

It's the Gooch!

exactly! naynay666

Rupture Spire seems like a perfect slide in.

It's like Transguild. I'll slot it in. Thanks!

Opal Palace instead of Shimmering Grotto

I would say use Vesuva instead of Unknown Shores. I also like Reflecting Pool but its too hit-or-miss with what kind of mana you'll get. Cavern of Souls seems like a no-brainer. Forbidden Orchard helps and doesn't have that bad of a drawback.

As far as non-land cards go, Aggravated Assault is good for beating faces, as is Gratuitous Violence. Chameleon Colossus is another shapeshifter favorite. I would also run Expedition Map for some mana-fixing or in case you run dry.

thanks for the suggestions! :)

Intruder Alarm would be fun for infinite sliver searching and playing with a Gemhide Sliver and Sliver Overlord (assuming you have some other slivers out too for mana).

Or a using a Dormant Sliver + Gemhide Sliver + Heart Sliver you could draw and play the majority of your deck in a turn. Then just sac Dormant Sliver when you are ready to attack.

Another card to get use out of Sliver Overlord's second ability is Unnatural Selection. Some ideas to consider..

ill give those a try. thanks!

Training Grounds is a good addition with Overlord as the Commander. I'd replace Door of Destinies for it, it's waaay too slow.