Theros Block

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Everything is from Theros block.
There is no 5-color identity Legendary Creature from Theros block, so I punted and use Chromanticore.
If someone ever were to balk at it (no one ever does), I would go off-theme and use Sliver Queen.
 
Mana Acceleration (10): General (1): Spells (23): Sideboard (Omitted/Cut card ideas):
1 Astral Cornucopia 1 Chromanticore 1 Ajani, Mentor of Heroes 1 Chariot of Victory
1 Burnished Hart   1 Ashiok, Nightmare Weaver 1 Fleetfeather Sandals
1 Opaline Unicorn Creatures (31): 1 Destructive Revelry 1 Bow of Nylea
1 Kiora's Follower 1 Colossus of Akros 1 Kiora, the Crashing Wave 1 Hythonia the Cruel
1 Xenagos, the Reveler 1 Ashen Rider 1 Extinguish All Hope 1 Shipbreaker Kraken
1 Karametra's Acolyte 1 Athreos, God of Passage 1 Whip of Erebos 1 Polis Crusher
1 Market Festival 1 Daxos of Meletis 1 Worst Fears 1 Fleecemane Lion
1 Peregrination 1 Ephara, God of the Polis 1 Bident of Thassa 1 Eidolon of Blossoms
1 Sylvan Caryatid 1 Iroas, God of Victory 1 Curse of the Swine 1 Akroan Phalanx
1 Voyaging Satyr 1 Karametra, God of Harvests 1 Interpret the Signs 1 Silent Sentinel
  1 Keranos, God of Storms 1 Oracle's Insight 1 Cyclops of Eternal Fury
Lands (35): 1 Kruphix, God of Horizons 1 Whelming Wave 1 Spear of Heliod
1 Temple of Abandon 1 Medomai the Ageless 1 Artisan's Sorrow  
1 Temple of Deceit 1 Mogis, God of Slaughter 1 Consign to Dust  
1 Temple of Mystery 1 Pharika, God of Affliction 1 Fade into Antiquity  
1 Temple of Silence 1 Phenax, God of Deception 1 Hunter's Prowess  
1 Temple of Triumph 1 Prophet of Kruphix 1 Unravel the AEther  
1 Temple of Enlightenment 1 Xenagos, God of Revels 1 Hammer of Purphoros  
1 Temple of Malice 1 Abhorrent Overlord 1 Banishing Light  
1 Temple of Plenty 1 Eater of Hope 1 Elspeth, Sun's Champion  
1 Temple of Epiphany 1 Erebos, God of the Dead 1 Fated Retribution  
1 Temple of Malady 1 Arbiter of the Ideal 1 Glimpse the Sun God  
1 Mana Confluence 1 Archetype of Imagination 1 Revoke Existence  
1 Nykthos, Shrine to Nyx 1 Sphinx's Disciple    
1 Unknown Shores 1 Thassa, God of the Sea    
4 Swamp 1 Tromokratis    
5 Island 1 Courser of Kruphix    
5 Forest 1 Heroes' Bane    
4 Mountain 1 Hydra Broodmaster    
4 Plains 1 Mistcutter Hydra    
  1 Nylea, God of the Hunt    
  1 Purphoros, God of the Forge    
  1 Stormbreath Dragon    
  1 Heliod, God of the Sun