Sure, you've got your "all other [creature type] get +1/+1" baseline, but going back to Lord of Atlantis in the beginning of the game the coolest lords were always the ones that granted a unique tribal effect, and that's especially true when it's something that leans into their unique identity as opposed to something generic like first strike of hexproof ala Drogskol Captain - something like Rage Forger has always been a more interesting design
Guardian Treasure Guardian Treasure is an amazingly powerful card
And, Secret Village offers a wide array of protection, thanks to its Spell Card negation
It is one of the most powerful Pokemon in the video games, and the same goes for the card game
Like most Magic: The Gathering cards, the value of Geralf's Masterpiece depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Shadows over Innistrad)