You can find the official text of any card on Gatherer
With the first expansions out of the way, let's get to the foils: Painter's Servant (Kaladesh Inventions, NM) Opalescence (Urza's Destiny)
It's probably not as good as Leyline of the Void (although even that's up for debate, I've never attacked for nine with a Leyline of the Void), but it also doesn't take up space in your sideboard
Like most Magic: The Gathering cards, the value of Palladium Myr depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Wizards Play Network 2025)
That said, they can be a little specific but offer opportunities for decks and enough support that they are worth the mention