Sorrow's Path

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This deck gives someone Sorrow's Path with Zedruu, then taps and untaps it a bunch of times.
Many cards here tap or untap lands, or tutor for Sorrow's Path.
 
Mana Acceleration (3): General (1): Spells (31): Sideboard (Omitted/Cut card ideas):
1 Unbender Tine 1 Zedruu the Greathearted 1 Sorrow's Path 1 Slayers' Stronghold
1 Coalition Relic   1 Candelabra of Tawnos 1 Timetwister
1 Gilded Lotus Creatures (29): 1 Crucible of Worlds 1 Thran Dynamo
  1 Nin, the Pain Artist 1 Expedition Map 1 In the Web of War
Lands (36): 1 Niv-Mizzet, the Firemind 1 Icy Manipulator 1 Darksteel Garrison
1 Volcanic Island 1 Aboshan, Cephalid Emperor 1 Mishra's Helix 1 Akroma's Memorial
1 Tundra 1 Aphetto Alchemist 1 Planar Portal 1 Swiftfoot Boots
1 Plateau 1 Arbiter of the Ideal 1 Ring of Gix 1 Lightning Greaves
1 Steam Vents 1 Arcanis the Omnipotent 1 Rings of Brighthearth 1 Savage Beating
1 Hallowed Fountain 1 Azami, Lady of Scrolls 1 Ring of Three Wishes 1 Mindmoil
1 Sacred Foundry 1 Fatestitcher 1 Staff of Domination 1 Druidic Satchel
1 Izzet Boilerworks 1 Floodbringer 1 Thousand-Year Elixir 1 Karn, Silver Golem
1 Azorius Chancery 1 Heidar, Rimewind Master 1 Energy Arc 1 Sculpting Steel
1 Boros Garrison 1 Noble Benefactor 1 Jeskai Ascendancy 1 Copy Artifact
1 City of Brass 1 Oboro Breezecaller 1 Ral Zarek 1 Mind's Eye
1 Deserted Temple 1 Patron of the Moon 1 Thoughtweft Gambit 1 Cryptoplasm
1 Thawing Glaciers 1 Rimewind Taskmage 1 Hidden Strings 1 Clone
1 Tolaria West 1 Telekinetic Sliver 1 Intellectual Offering 1 Maze of Ith
1 Vesuva 1 Temporal Adept 1 Library of Lat-Nam 1 Sakashima the Impostor
1 Celestial Colonnade 1 Tidal Force 1 Mind Over Matter 1 Phyrexian Metamorph
1 Command Tower 1 Tidewater Minion 1 Opposition 1 Terra Eternal
1 Mystic Monastery 1 Time Elemental 1 Psychic Venom 1 Archivist
1 Petrified Field 1 Tradewind Rider 1 Teferi, Temporal Archmage 1 Consecrated Sphinx
1 Reflecting Pool 1 Trickster Mage 1 Time Spiral 1 Infuse
1 Rishadan Port 1 Vedalken Certarch 1 Turnabout 1 Twitch
7 Snow-Covered Island 1 Kamahl, Pit Fighter 1 Aggravated Assault 1 Jolt
4 Snow-Covered Mountain 1 Kiki-Jiki, Mirror Breaker 1 Elemental Mastery 1 Rewind
4 Snow-Covered Plains 1 Viashino Heretic 1 Fervor 1 Snap
1 Sol Ring 1 Adarkar Valkyrie 1 Profound Journey 1 Vesuvan Doppelganger
  1 Mikaeus, the Lunarch 1 Scepter of Dominance 1 Vesuvan Shapeshifter
  1 Sun Titan 1 To Arms! 1 Sword of the Paruns
  1 Weathered Wayfarer   1 Sphinx of Magosi