Jarad, Rival to Vraska

+1: Sacrifice a creature. Destroy target nonland permanent opponent controls with CMC X or less, where X is sacrificed creature's CMC.
-3: Put X +1/+1 counters on your creatures in any configuration, where X is the number of creature cards in your graveyard halved. (Round down)
-10: Return all creatures in your graveyard to the battlefield under your control with +1/+1 counters. Shuffle your graveyard into your library.