Avacyn Mass Destruction

Click here for visual deck (with images)
Click here for my EDH Commander decks
 
This is a work in progress. The idea here is to wipe the board, play Avacyn, then wipe the board again as necessary.
Currently, I think I went too far with the boardwipes, and the deck needs threats. (With more threats and less boardwipes than what I show here, hopefully this deck won't be too obnoxious to play against.)
Artifact/creature mana ramp won't survive, so I'm running as much land search as I can in mono-White.
 
Mana Acceleration (25): General (1): Spells (31): Sideboard (Omitted/Cut card ideas):
1 Armillary Sphere 1 Avacyn, Angel of Hope 1 Champion's Helm 1 Mask of Avacyn
1 Braidwood Sextant   1 Lightning Greaves 1 Mirror Shield
1 Burnished Hart Creatures (8): 1 Nevinyrral's Disk 1 Cloak and Dagger
1 Dreamstone Hedron 1 Grand Abolisher 1 Oblivion Stone 1 General's Kabuto
1 Farfinder 1 Mageta the Lion 1 Swiftfoot Boots 1 Whispersilk Cloak
1 Hedron Archive 1 Magus of the Disk 1 Worldslayer 1 Shadowspear
1 Journeyer's Kite 1 Myojin of Cleansing Fire 1 Akroma's Vengeance 1 Serenity
1 Mind Stone 1 Nova Cleric 1 Austere Command 1 Boompile
1 Mycosynth Wellspring 1 Realm-Cloaked Giant // Cast Off 1 Catastrophe 1 Coercive Portal
1 Orazca Relic 1 Sunblast Angel 1 Cleansing Nova 1 Emeria Shepherd
1 Pilgrim's Eye 1 Wakening Sun's Avatar 1 Day of Judgment 1 Armageddon
1 Renegade Map   1 Dismantling Wave 1 Citywide Bust
1 Skittering Surveyor   1 End Hostilities 1 Cleanfall
1 Solemn Simulacrum   1 Fated Retribution 1 Cleansing Meditation
1 Thaumatic Compass // Spires of Orazca   1 Fortunate Few 1 Dusk // Dawn
1 Traveler's Amulet   1 Fumigate 1 Elspeth, Sun's Champion
1 Wanderer's Twig   1 Hour of Revelation 1 Fall of the Thran
1 Wayfarer's Bauble   1 Kirtar's Wrath 1 Fell the Mighty
1 Wild-Field Scarecrow   1 Martial Coup 1 Hour of Reckoning
1 Eternal Dragon   1 Phyrexian Rebirth 1 Mass Calcify
1 Kor Cartographer   1 Planar Cleansing 1 Paraselene
1 Noble Templar   1 Planar Outburst 1 Patrician's Scorn
1 Smothering Tithe   1 Purify 1 Planar Collapse
1 The Birth of Meletis   1 Rout 1 Ravages of War
1 Tithe   1 Scourglass 1 Retribution of the Meek
    1 Shatter the Sky 1 Scaled Destruction
Lands (35):   1 Soulscour 1 Solar Tide
1 Arch of Orazca   1 Sublime Exhalation 1 Tempest of Light
1 Blast Zone   1 Sunscour 1 Heliod's Intervention
1 Emeria's Call // Emeria, Shattered Skyclave   1 Winds of Rath 1 Divine Reckoning
1 Kor Haven   1 Wrath of God 1 Boreas Charger
1 Mistveil Plains     1 Cartographer's Hawk
1 Myriad Landscape     1 Gift of Estates
1 Mystifying Maze     1 Knight of the White Orchid
1 Ondu Inversion // Ondu Skyruins     1 Land Tax
1 Skyclave Cleric // Skyclave Basilica     1 Verge Rangers
1 Terrain Generator     1 Weathered Wayfarer
1 Thawing Glaciers      
23 Plains      
1 Sol Ring