Zirda as Commander

Click here for visual deck (with images)
Click here for my EDH Commander decks
 
All activated abilities. I tried to find abilities that benefit a lot from Zirda's cost reduction.
Since I'm playing Zirda as a commander (not a companion), I don't need to meet Zirda's requirement, but the deck almost does meet it anyway.
 
Mana Acceleration (13): General (1): Spells (21): Sideboard (Omitted/Cut card ideas):
1 Basalt Monolith 1 Zirda, the Dawnwaker 1 Arcane Encyclopedia 1 Dark Depths
1 Bonder's Ornament   1 Carnage Altar 1 Spawnsire of Ulamog
1 Burnished Hart Creatures (29): 1 Diviner's Wand 1 Rings of Brighthearth
1 Conqueror's Galleon // Conqueror's Foothold 1 Myr Propagator 1 Heartstone 1 Myth Realized
1 Dreamstone Hedron 1 Soul of New Phyrexia 1 Helm of the Host 1 Clockwork Dragon
1 Grim Monolith 1 Walking Ballista 1 Illusionist's Bracers 1 Lithoform Engine
1 Hedron Archive 1 Welder Automaton 1 Journeyer's Kite 1 Crackdown Construct
1 Magnifying Glass 1 Sunhome Guildmage 1 Leonin Sun Standard 1 Kurkesh, Onakke Ancient
1 Orazca Relic 1 Brash Taunter 1 Retrofitter Foundry 1 Citanul Flute
1 Thaumatic Compass // Spires of Orazca 1 Captivating Crew 1 Staff of Domination 1 Vance's Blasting Cannons // Spitfire Bastion
1 Unstable Obelisk 1 Cavalier of Flame 1 Tamiyo's Journal 1 Loreseeker's Stone
1 Soulbright Flamekin 1 Hoard-Smelter Dragon 1 Planeswalker's Fury 1 Planeswalker's Mirth
1 Legion's Landing // Adanto, the First Fort 1 Inner-Flame Igniter 1 Rowan Kenrith 1 High Sentinels of Arashin
  1 Kumano, Master Yamabushi 1 Dawn of Hope 1 Eight-and-a-Half-Tails
Lands (36): 1 Purphoros, God of the Forge 1 Echoes of the Kin Tree 1 Combat Medic
1 Bonders' Enclave 1 Scalding Devil 1 Gerrard's Battle Cry 1 Sokenzan Spellblade
1 Crawling Barrens 1 Screeching Phoenix 1 Luminarch Ascension 1 Hellkite Igniter
1 Den of the Bugbear 1 Shivan Hellkite 1 Mastery of the Unseen 1 Dragon Whisperer
1 Myriad Landscape 1 Skarrgan Hellkite 1 Mobilization 1 Steel Hellkite
1 Sejiri Shelter // Sejiri Glacier 1 Sun-Collared Raptor 1 Sacred Mesa 1 Shield of the Ages
1 Shivan Gorge 1 Volcanic Rambler 1 Safeguard 1 Rocket Launcher
1 Spinerock Knoll 1 Warmonger Hellkite   1 Goblin Cannon
1 Terrain Generator 1 Akroan Phalanx   1 Juju Bubble
1 Thawing Glaciers 1 Blaring Recruiter   1 Wine of Blood and Iron
1 Windbrisk Heights 1 Crowd Favorites   1 Well of Knowledge
12 Mountain 1 Drogskol Cavalry    
13 Plains 1 Glory    
1 Sol Ring 1 Heliod, Sun-Crowned    
  1 Master Trinketeer    
  1 Oketra the True    
  1 Prava of the Steel Legion    
  1 Vengeful Archon