Leviathans

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Big stompy fish!
A lot of Leviathans have really bad "enters the battlefield" abilities (sacrifice lands, give away your permanents, etc.), so I need to run Stifle effects, plus other cards that try to get around these (Time Stop, Illusionary Mask, etc.)
Since I was already there doing the theme, and there's not quite enough Leviathans, I added in some other huge creatures with very bad ETB abilities as well. (This part of the deck is slowly going away withj time.)
I switched this deck from B/U/G to U/G/R when Xyris was printed. This means I can't run one of the Leviathans (Nemesis of Reason), but that's OK, I'd rather have a Legendary Leviathan as the general.
Marjhan was a Serpent in Homelands, a Leviathan in Masters Edition II, and is now a Serpent again on Gatherer. So leaving it out for now.
 
Mana Acceleration (16): General (1): Spells (19): Sideboard (Omitted/Cut card ideas):
1 Unstable Obelisk 1 Xyris, the Writhing Storm 1 Crucible of Worlds 1 Phyrexian Dreadnought
1 Arixmethes, Slumbering Isle   1 Illusionary Mask 1 Hunted Dragon
1 Kiora, Behemoth Beckoner Leviathans (20): 1 Scroll of Fate 1 Worldgorger Dragon
1 Kiora's Follower 1 Eater of Days 1 Sundial of the Infinite 1 Levitation
1 Clever Conjurer 1 Nimbus Swimmer 1 Torpor Orb 1 Akroma's Memorial
1 Fatestitcher 1 Simic Sky Swallower 1 Repudiate // Replicate 1 Furnace Dragon
1 Kelpie Guide 1 Aethersquall Ancient 1 Voidslime 1 Whisperwood Elemental
1 Midnight Clock 1 Archipelagore 1 Disallow 1 Boldwyr Heavyweights
1 Tidewater Minion 1 Breaching Leviathan 1 Discontinuity 1 Hunted Troll
1 Vizier of Tumbling Sands 1 Charix, the Raging Isle 1 Homarid Spawning Bed 1 Nova Chaser
1 Circuitous Route 1 Grozoth 1 Primordial Mist 1 Primeval Force
1 Explosive Vegetation 1 Inkwell Leviathan 1 Quest for Ula's Temple 1 Myojin of Life's Web
1 Mana Reflection 1 Jokulmorder 1 Stifle 1 The Magic Mirror
1 Migration Path 1 Kederekt Leviathan 1 Sublime Epiphany 1 Clone Legion
1 Vastwood Surge 1 Kiora's Dambreaker 1 Summary Dismissal 1 Consecrated Sphinx
1 Zendikar Resurgent 1 Leviathan 1 Tale's End 1 Sire of Stagnation
  1 Pearl Lake Ancient 1 Time Stop 1 Polar Kraken
Lands (36): 1 Segovian Leviathan 1 Trickbind 1 Demonic Tutor
1 Gruul Turf 1 Sky Swallower 1 Whelming Wave 1 Mirror of the Forebears
1 Izzet Boilerworks 1 Slinn Voda, the Rising Deep   1 Kiora, Master of the Depths
1 Simic Growth Chamber 1 Stormtide Leviathan   1 Burnished Hart
1 Frontier Bivouac 1 Thing from the Deep   1 Arcanis the Omnipotent
1 Ketria Triome 1 Trench Gorger   1 Decree of Savagery
1 Bala Ged Recovery // Bala Ged Sanctuary     1 Vitalizing Wind
1 Beyeen Veil // Beyeen Coast Non-Leviathans (8):   1 The Mimeoplasm
1 Command Tower 1 Leveler   1 Artisan of Kozilek
1 Glasspool Mimic // Glasspool Shore 1 Archetype of Imagination   1 Myojin of Seeing Winds
1 Kazuul's Fury // Kazuul's Cliffs 1 Denizen of the Deep   1 Void Winnower
1 Khalni Ambush // Khalni Territory 1 Hunted Phantasm   1 The Unspeakable
1 Path of Ancestry 1 Serpent of Yawning Depths   1 Tidespout Tyrant
1 Sea Gate Restoration // Sea Gate, Reborn 1 Spawning Kraken   1 Prophet of Kruphix
1 Shatterskull Smashing // Shatterskull, the Hammer Pass 1 Wonder   1 Teleport
1 Song-Mad Treachery // Song-Mad Ruins 1 Wormfang Manta   1 Staff of Domination
1 Turntimber Symbiosis // Turntimber, Serpentine Wood     1 Tidal Force
1 Valakut Awakening // Valakut Stoneforge     1 Bringer of the Blue Dawn
4 Forest     1 Sun Quan, Lord of Wu
13 Island     1 Seedborn Muse
1 Mountain     1 Colossal Heroics
1 Sol Ring     1 Demon of Death's Gate