Buried Under the Floorboards

Whenever a creature you control dies, choose a number between 1 and 7 at random. Put it below the top X cards of your library where X is the chosen number.
{5}{b}{b}, Sacrifice Buried Under the Floorboards: Put the top 7 cards of your library into your graveyard. Put each creature put into a
graveyard this way onto the battlefield.
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