1 color R

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Click here for my EDH Commander decks
 
• Devotion to red
• Mountain matters (damage = number of mountains, etc.)
• Red pitch spells
 
Mana Acceleration (12): General (1): Spells (26): Sideboard (Omitted/Cut card ideas):
1 Caged Sun 1 Anax, Hardened in the Forge 1 Blazing Shoal 1 Magmatic Force
1 Gauntlet of Might   1 Cave-In 1 Chandra, Fire Artisan
1 Gauntlet of Power Creatures (25): 1 Claws of Valakut 1 Dragon Mage
1 Nyx Lotus 1 Akki Lavarunner // Tok-Tok, Volcano Born 1 Crash 1 Runehorn Hellkite
1 Chandra, Bold Pyromancer 1 Akoum Hellkite 1 Downhill Charge 1 Chandra Ablaze
1 Chandra, Novice Pyromancer 1 Bloodmark Mentor 1 Eternal Flame 1 Goblin Charbelcher
1 Chandra, Torch of Defiance 1 Chandra, Fire of Kaladesh // Chandra, Roaring Flame 1 Fireblast 1 Glacial Crevasses
1 Dockside Extortionist 1 Cinder Pyromancer 1 Flameshot 1 Dragon's Claw
1 Exuberant Firestoker 1 Crimson Hellkite 1 Force of Rage 1 Iron Star
1 Koth of the Hammer 1 Dream Pillager 1 Fury of the Horde 1 Ring of Valkas
1 Runaway Steam-Kin 1 Embermaw Hellion 1 Granite Grip 1 Staff of the Flame Magus
1 Sisters of the Flame 1 Fanatic of Mogis 1 Jaws of Stone 1 Chandra's Phoenix
  1 Fire Dragon 1 Jaya, Venerated Firemage 1 Chaos Moon
Lands (36): 1 Fury 1 Lightning Cloud 1 Cinder Seer
1 Balduvian Trading Post 1 Goblin Battle Jester 1 Mine Collapse 1 Embereth Paladin
1 Castle Embereth 1 Heartlash Cinder 1 Mogg Alarm 1 Fiery Bombardment
1 Dormant Volcano 1 Horde of Boggarts 1 Pulverize 1 Fire Servant
1 Dwarven Mine 1 Intimidator Initiate 1 Pyrokinesis 1 Foundry Street Denizen
1 Myriad Landscape 1 Leyline Tyrant 1 Rockslide Ambush 1 Goblin Soothsayer
1 Nykthos, Shrine to Nyx 1 Outrage Shaman 1 Seismic Strike 1 Martyr of Ashes
1 Spinerock Knoll 1 Paragon of Fierce Defiance 1 Slaying Fire 1 Scent of Cinder
1 Thawing Glaciers 1 Purphoros, Bronze-Blooded 1 Spire Barrage 1 Sulfuric Vapors
1 Valakut, the Molten Pinnacle 1 Purphoros, God of the Forge 1 Spitting Earth 1 The Flame of Keld
1 War Room 1 Ruin Grinder 1 Sundering Stroke 1 Earth Servant
25 Mountain 1 Spawn of Thraxes 1 Thunderclap 1 Ib Halfheart, Goblin Tactician
1 Sol Ring 1 Stromkirk Occultist 1 Thunderous Might 1 Landslide
  1 Syr Carah, the Bold   1 The First Eruption
  1 Torbran, Thane of Red Fell   1 Outpost Siege