Being able to cast creature cards from the top of your library is already strong, and you can cheat big creatures into play once per turn, and not just from your hand in a clunky way like Elvish Piper does
There will surely be a fair number of these sorts of cards revealed as The Lord of the Rings: Tales of Middle-earth previews begin, and will certainly play an important part of any deck where The Ring is involved

1 Winter, Cynical Opportunist 1 Rendmaw, Creaking Nest 1 Deluge of Doom 1 Demonic Covenant 1 Into the Pit 1 Polluted Cistern // Dim Oubliette 1 Demolisher Spawn 1 Formless Genesis 1 Ursine Monstrosity 1 Convert to Slime 1 Moldgraf Monstrosity 1 Culling Ritual 1 Cemetery Tampering 1 Noxious Gearhulk 1 Ob Nixilis Reignited 1 Professor Onyx 1 Reanimate 1 Whip of Erebos 1 Arachnogenesis 1 Deathcap Cultivator 1 Giant Adephage 1 Hornet Queen 1 Inscription of Abundance 1 Ishkanah, Grafwidow 1 Scavenging Ooze 1 Titania, Nature's Force 1 Wrenn and Seven 1 Deadbridge Chant 1 Grim Flayer 1 Grist, the Hunger Tide 1 Old Stickfingers 1 Solemn Simulacrum 1 Dryad Arbor 1 Exotic Orchard 1 Grim Backwoods 1 Llanowar Wastes 1 Necroblossom Snarl 1 Temple of Malady 1 Twilight Mire 1 Viridescent Bog 1 Woodland Cemetery 1 Vile Mutilator 1 Terramorphic Expanse 1 Night's Whisper 1 Grapple with the Past 1 Deathreap Ritual 1 Putrefy 1 Arcane Signet 1 Sol Ring 1 Suspicious Bookcase 1 Command Tower 1 Carrion Grub 1 Stitcher's Supplier 1 Crawling Sensation 1 Gnarlwood Dryad 1 Harmonize 1 Harrow 1 Moldgraf Millipede 1 Mulch 1 Obsessive Skinner 1 Rampant Growth 1 Sakura-Tribe Elder 1 Skola Grovedancer 1 Binding the Old Gods 1 Grisly Salvage 1 Nyx Weaver 1 Burnished Hart 1 Commander's Sphere 1 Golgari Signet 1 Haywire Mite 1 Mind Stone 1 Talisman of Resilience 1 Whispersilk Cloak 1 Ash Barrens 1 Barren Moor 1 Bojuka Bog 1 Darkmoss Bridge 1 Evolving Wilds 1 Golgari Rot Farm 1 Jungle Hollow 1 Reliquary Tower 1 Tainted Wood 1 Temple of the False God 1 Tranquil Thicket 1 Tree of Tales 1 Vault of Whispers 7 Swamp 7 Forest Death Toll Tokens 1 Insect (Death Toll) // Shapeshifter token 1 Insect (Death Toll) // Ooze token 1 Insect (Hornet Queen) // Spider (1/2) token 1 Treefolk // Spider (1/2) token 1 Insect (black-green) // Shapeshifter token 1 Ooze (2/2) // Insect (Hornet Queen) token 2 Elemental // Bird tokens 2 Demon (5/5) // Bird tokens 0011a_MTGDSK_ComToken: Insect // 0001b_MTGDSK_ComToken: Shapeshifter 0006a_MTGDSK_ComToken: Demon // 0005b_MTGDSK_ComToken: Bird Death Toll Scheme Cards Choose Your Champion Plots That Span Centuries My Tendrils Run Deep Dark Wings Bring Your Downfall I Am Never Alone Rot Like the Scum You Are You Live Only Because I Will It My Will Is Irresistible My Wings Enfold All Your Mistake Is My Triumph 0330_MTGDSK_Schemes: Choose Your Champion 0345_MTGDSK_Schemes: My Tendrils Run Deep See the schemes and tokens from Death Toll in the Duskmourn: House of Horror Card Image Gallery starting September 13

2013-04-15 Turn will cause the creature lose all other colors and creature types, but it will retain any other card types (such as artifact) it may have.
This is a great commander for an aggressive artifact strategy since you can freely attack, and it keeps the gas flowing