The type-changing ability that can make Karametra not be a creature functions only on the battlefield
That being said, unlike Mana Vault, Sol Ring continues to tap for mana over the course of the game without needing a huge mana investment to untap it
Also, Avatar of Woe can lead to some game states like I talked about above, so I think Ill give it the boot
He only grabs stuff out of opponent's graveyards again, but he can do it over and over again
The card's special ability doesn't actually provide any strategic advantage and is strictly meant to be a joke, hence why the card is banned at tournaments
Channeling Willy Wonka's golden ticket gambit, this card will be hidden in one English-language collector booster pack, so every booster will have a chance of finding the precious Ash Nazg