Undying Persist

Undying Persist (Visual)

Undying
Persist
Remove counters
Whenever creature enters/leaves ...
Clones (you can alternate between making them Undying and Persist, so they can die over and over)
This deck can very easily go infinite with repeatable sac outlets (e.g. Goblin Bombardment, Phyrexian Altar). I purposely left them out, so the deck isn't so degenerate, but you can see some of them in the Sideboard.

Click here for a text version of this decklist
Click here for my EDH Commander decks

General (2):
Ludevic, Necro-Alchemist Reyhan, Last of the Abzan

Creatures (39):
Rattleblaze Scarecrow Gravelgill Axeshark Lazav, the Multifarious Quillspike Scuzzback Marauders Sek'Kuar, Deathkeeper Shapers of Nature Soul Diviner Trapjaw Kelpie Zameck Guildmage Demonlord of Ashmouth Geralf's Messenger Grim Haruspex Harvester of Souls Mikaeus, the Unhallowed Ogre Slumlord Pawn of Ulamog Puppeteer Clique Sifter of Skulls Vengeful Vampire Geralf's Mindcrusher Glen Elendra Archmage Mercurial Pretender River Kelpie Sage of Fables Sakashima's Student Vesuvan Doppelganger Vesuvan Shapeshifter Aerie Ouphes Howlgeist Melira, Sylvok Outcast Soul of the Harvest Woodfall Primus Vorapede Flayer of the Hatebound Furystoke Giant Hound of Griselbrand Nearheath Stalker Thunderblust

Spells (11):
Cauldron of Souls Power Conduit Golgari Germination Black Market Open the Graves Durable Handicraft Gutter Grime Ulvenwald Mysteries Ion Storm Vicious Shadows Warstorm Surge

Mana Acceleration (12):
Astral Cornucopia Chromatic Lantern Coalition Relic Everflowing Chalice Prismatic Geoscope Frontier Siege Hunting Wilds Mana Reflection Ranger's Path Recross the Paths Skyshroud Claim Zendikar Resurgent

Lands (36):
Underground Sea Badlands Taiga Bayou Tropical Island Volcanic Island Watery Grave Blood Crypt Stomping Ground Overgrown Tomb Breeding Pool Steam Vents Sunken Hollow Smoldering Marsh Cinder Glade Fetid Pools Canyon Slough Sheltered Thicket Choked Estuary Foreboding Ruins Game Trail Drowned Catacomb Command Tower Exotic Orchard Gaea's Cradle Grim Backwoods High Market Keldon Necropolis Miren, the Moaning Well Mosswort Bridge Path of Ancestry Phyrexian Tower Reflecting Pool Spinerock Knoll Westvale Abbey Sol Ring