Lightning, Army of One, calls back to Final Fantasy XIIIs stagger mechanic which in combination with her first-strike and trample effects will allow you to deal double damage to your opponents and their creatures
4 Energy is a 'lot', if you don't have ways of generating more of it, and while blowing up a single land a turn might seem slow, it is annoying, and Commander runs a lot of nonbasics
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In this set, all of the Battles are Sieges, where you cast the card, its in play and you get an effect, then you choose an opponent to defend it
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We tried many fancy versions of leveling up your spells, but in the end, we went with a version I originally named "modal kicker" before it went on to become tiered