Heres what I ended up with: Creatures (40) 1 Horned Sliver 1 Mnemonic Sliver 1 Muscle Sliver 1 Heart Sliver 1 Root Sliver 1 Blade Sliver 1 Synapse Sliver 1 Essence Sliver 1 Quick Sliver 1 Hunter Sliver 1 Hibernation Sliver 1 Basal Sliver 1 Bonesplitter Sliver 1 Dementia Sliver 1 Gemhide Sliver 1 Harmonic Sliver 1 Might Sliver 1 Opaline Sliver 1 Screeching Sliver 1 Telekinetic Sliver 1 Two-Headed Sliver 1 Battering Sliver 1 Darkheart Sliver 1 Dormant Sliver 1 Frenetic Sliver 1 Necrotic Sliver 1 Reflex Sliver 1 Sinew Sliver 1 Homing Sliver 1 Sliver Legion 1 Virulent Sliver 1 Chameleon Colossus 1 Sentinel Sliver 1 Striking Sliver 1 Battle Sliver 1 Megantic Sliver 1 Predatory Sliver 1 Galerider Sliver 1 Syphon Sliver 1 Manaweft Sliver Lands (38) Spells (21) 1 Sensei's Divining Top 1 Sylvan Library 1 Sol Ring 1 Aether Vial 1 Fellwar Stone 1 Darksteel Ingot 1 Patriarch's Bidding 1 Harsh Mercy 1 Cryptic Gateway 1 Greater Good 1 Unnatural Selection 1 Springleaf Drum 1 Distant Melody 1 Door of Destinies 1 Cauldron of Souls 1 Eldrazi Monument 1 Expedition Map 1 Nim Deathmantle 1 Call to the Kindred 1 Staff of Nin 1 Chromatic Lantern I decided to make this a true five-color Sliver deck, so with that in mind color-fixing was a priority

By the way, I don't know if you noticed, but the modern Oracle wordings for the ten dual lands has what they tap for in reminder text, so they are, technically, according to the same wording as Urborg, Tomb of Yawgmoth, now fully colorless
1 Foil Promo Card featuring Xerneas
Opponents in the first few stages actively attack your face-down Monster cards regardless of whether you have something that could defeat it on the return attack
Being a Basic Pokemon means you can get it into play fast, but keep in mind, this attack requires a lot of energy, so plan accordingly