40k commander decks mtg Warhammer 40,000 Universes Beyond: Warhammer 40,000 Commander

Or maybe it would make all the other burn spells too obsolete

Mox Sapphire doesn't do anything more than provide a single blue mana, but the fact you could play as many of these artifacts as you wished on the first turn meant it was theoretically possible to have far more mana than your opponent if you received a lucky draw

Austere Command has a functional second copy in Cleansing Nova

Ive even played a Swamp before when I had lots of black cards in my sideboard (and having another black mana to use Cranial Platings ability didnt hurt)

Cards like Lofty Denial allow you to be tricky and controlling, but reward you for having relevant board presence and being able to apply pressure