An innersleeve, outersleeve and toploader are the bare minimum, but you may also want to invest in some even more secure Screwdown Holder that will completely protect it from the elements
I mostly play token themed decks, B/W Tokens in Modern, G/W Rhys the Redeemed in EDH and what ever token deck I can brew in Standard
The ability that defines Burrowguard Mentor's power and toughness functions in all zones, not just the battlefield
Deadly Cover-Up is a prime example of this, bundling the incredibly niche Surgical Extraction with a solid board wipe effect in a tight five mana package
But for all intents and purposes, gumming up the board with a bunch of prohibitive prison pieces IS our win condition
They feature human characters from the franchise including Gym Leaders, rivals, trainer classes, villains, and more