Putting things like spaceships and laser beams in a main, Standard-legal set works when done sparingly, and the same goes for bringing in real-world franchises
PWCC and Goldin (Auction Houses) If you're sitting on high-end graded cards we're talking $2,000+ slabs the big auction houses are worth considering
Similar cards to your key cards can often help you win
You can ramp with mana dorks like Magus of the Coffers, Bog Witch, and Leaden Myr to grow your Rat Colony army quicker
Final Tip Once you know the basics, the best way to improve is to play with others
Our proxy can be used for kitchen table magic, a proxy for deck testing, act as additional copies of those expensive cards that you already own, players who looking for altered art of a card that they like or to use as their Commander, cube, EDH / CEDH games with friends who welcome proxies