Unstable Metashift

Other Enchantments are now Artifacts instead, and Artifacts are now Enchantments instead.
(This applies to cards in hands, libraries, and graveyards, as well as on the battlefield.)

"Oh, that Sonya Wittleblossom thinks she can
claim MY speaking slot at the next Elemental Symposium, does she? Well, let's just see what
she has to say after I show them THIS!"
— Gooblin McMurray, last words