It also does truly astounding things with effects like affinity as well as field-wide buffs
Back in the early days of the game, Wizards of the Coast created a list of cards that they will never reprint to preserve their collectability and value
Only 11 creatures exist with the ability on them, and there are another three cards that can give creatures skulk: Skeleton Key, Behind the Scenes, and Odric, Lunarch Marshal
Look for: Graded 10s, Gems, 1st Editions, Holos, Foils, Shadowless, Low Pops, Sealed Packs, Sealed Blaster Packs, Sealed Decks, 1996 to Modern Cards and More
Currently, my favorite conceptually is TrickbindThassas Oracle is a very common way for a player to try to win, and if you have Trickbind theyre basically guaranteed to lose instead of win unless theyve protected it with a Silence type effect