Galadhrim Brigade has the squad mechanic, so you can generate a lot of mana with your elves like Priest of Titania or Marwyn, the Nurturer and drop a bunch of elf lords in a single turn
Aether Revolt deals damage every time you gain energy, while Emissary of Soulfire could make Satya enormous enough to attack alone
Eight mana is a ton, but all the usual enablers, from Ugin, the Ineffable, Foundry Inspector, Forsaken Monument, Karn, Legacy Reforged, and Ultima, Origin of Oblivion help get you to that point
She had razor-sharp focus
Rebound is a neat mechanic that lets you exile the spell when it resolves and then lets you cast it again at the top of your next upkeep step for free
Today, gaining tapping and gaining 5 or 6 life for each time in Commander it's not as strong with its 40-life start, and there aren't as many of these running around to abuse the table with 4 in each deck, and there's not the obvious Elf deck power for most multiplayer tables where you usually had one, and sometimes two