Grafdigger's Cage 
Artifact
"If you wind up in one of mine, you can be sure as silver it will be your last." —Grafdigger Wulmer
Artist:
Daniel LjunggrenShare:
Text:
Creature cards in graveyards and libraries can't enter the battlefield.Players can't cast spells from graveyards or libraries.
Rulings:
- 7/12/2019 Players can still play lands from graveyards or libraries if an effect allows them to do so.
- 7/12/2019 If an effect exiles a card from a library and allows a player to cast it, that player may do so. The spell is cast from exile, not a library.
- 7/12/2019 Look at the card as it exists in your graveyard to determine whether it can enter the battlefield. For example, Sculpting Steel can be put onto the battlefield as a copy of a creature, but Phyrexian Metamorph can’t be put onto the battlefield, even if it would copy a noncreature artifact.
- 7/12/2019 Manifesting a card from a graveyard or library is an impossible action while Grafdigger’s Cage is on the battlefield.
Legality:
- standard: Not legal
- future: Not legal
- frontier: Legal
- modern: Legal
- legacy: Legal
- pauper: Not legal
- vintage: Legal
- penny: Not legal
- commander: Legal
- 1v1: Legal
- duel: Legal
- brawl: Not legal
- oldschool: Not legal
- historic: Legal
- pioneer: Legal
- gladiator: Legal
- premodern: Not legal
- historicbrawl: Legal
- paupercommander: Not legal
- alchemy: Not legal
- explorer: Legal
- predh: Not legal
- oathbreaker: Legal