The Linebreaker gets the job done, plus it kind of reminds me of that one SpongeBob meme where the Flying Dutchman asks SpongeBob to stop staring at him with them big ol eyes
It turns all nonbasic lands into mountains, which completely shuts down decks that rely on fetches, shocks, or utility lands
All in all, Im still not a huge fan of Universes Beyond but Id much rather have these types of crossovers than things like The Walking Dead , Stranger Things , or Fortnite , which dont fit in with Magics design sensibilities at all
To see the full decklist, check out the Fallout Commander deck Science
While you can play it for one white mana and slowly create lifelink cats, the real upside is when you discard it to draw a card