trading cards sleeves 1200 Pack Card Sleeves, Matte Dual Card with Opaque Back & Smooth Shuffle, Tear Resistant Card Protectors for MTG, TCG and Game (12 Colors) : Toys & Games these sleeves are perfect for cards up to 240pt thickness Ultra Pro: 2.5" x 3.5"

Look for any imperfections, no matter how small

or Wizards finding a way to create more reprint equity (with the most likely being to support a new Frontier-like format at some point in the future, which would increase demand for a lot of new-ish cards that aren't quite good enough to be Modern staples)

There were two versions of these cards, one in various languages and one in Japanese featuring unique art

Don't grade if the error is on a low-value card (grading costs more than it's worth) or you're selling to dedicated misprint collectors

At least it's nice to be able to get this Mimikyu in cosmo foil now

Litten can be obtained from Mega Rising: Mega Gyarados pack in the Mega Rising set