It fits particularly well into chaos-style decks, group slug strategies, or any red-based build that wants to sow a little extra disruption without locking down the table entirely
She also allows Alien characters to challenge ready characters, so coupled with Aliens already in play, you'll give them Challenger +2, and they can challenge ready characters at the same time, and she's not expensive to play either, at just two ink
The best place to search for older cards is the Pokemon TCG Expansions Database
There are blacklists that circulate among bigger MTG sellers to stop known scammers or buyers deemed too annoying to work with from interacting with their auctions, and its very easy to end up on such a list if youre obnoxious
3 Treacherous Urge Puppets can be creepy enough on their own, but Treacherous Urge takes it a step further
For play, especially in Standard, Lightly Played (LP) can be a good, cheaper option