Arcana Bury

True Arcana - When casting Arcana Bury, you
may pay an additional {p/b}{p/b}{p/b}{p/b}. If you do, have
target opponent choose 2 nontoken creatures.
That opponent puts the chosen creatures on top
of their library in any order.
Play Arcana Bury as a Sorcery.
Target opponent puts the top 6 cards of their
library into their graveyard.