Armageddagoyf

When Armageddagoyf enters the battlefield, all players mill {x}.
Armageddagoyf's power and toughness are equal
to the number of artifacts in all graveyards.
"That night was like no other. It tore up the ground,
devoured the earth. It melted our battlements to slag,
then feasted upon them. Kuro Rel, Scout Report