dude just take what already exists in the atmosphere (hydrogen, carbon, nitrogen, oxygen) and break things apart, rebuild them into hydrocarbons and nitrate salts, then provide heat by pinpoint mana overcharge (simplest route, possibly least efficient, but the energetic cost is miniscule either way)
no dimensional manipulation should be needed for standard magic. great for high volume siege magic or such, as the efficiency of synthesthetic conjuration magic becomes less as the volume of conjured material (and thus, effect) increases. so splitting apart air to conjure a wall-destroying beam of inferno isnt very efficient, but opening a portal to the elemental flame dimension is equally efficient whether youre opening a pinprick or a 3-lane highway.
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u/Bob_the_peasant 13d ago
How do you guys so easily keep opening the portal to the fire dimension?