I'm not aware of "Sorcerous Elixir" as an official Magic: The Gathering keyword or ability. It doesn't correspond to any established mechanic like flying, deathtouch, cascade, or convoke, nor any named ability word I can verify.
It's possible this is a custom card, a misremembered name, or text from an item in another game entirely. If you encountered it on a specific card, I'd recommend checking the card's actual oracle text via Gatherer or Scryfall, since the rules-relevant wording will always be printed in the text box—keywords are just shorthand for those full instructions.
If you can share the exact card name or its rules text, I'm happy to break down how it works, the common rules pitfalls, and where it shines in a Commander game.