Only one vault was great enough to hold Emrakul.

Innistrad Remastered

Imprisoned in the Moon

Enchant creature, land, or planeswalker
Enchanted permanent is a colorless land with "{T}: Add {C}" and loses all other card types and abilities.

Foundations

Modern Horizons 3 Commander

March of the Machine Commander

Shadows over Innistrad Remastered

An unlikely jail for an impossible inmate.

Secret Lair Drop

Crimson Vow Commander

Forgotten Realms Commander

Eldritch Moon

Enchant creature, land, or planeswalker
Enchanted permanent is a colorless land with "{T}: Add {C} to your mana pool" and loses all other card types and abilities.