There are a ton of black-based decks that love to sacrifice things (and drain and gain, for that matter), so I think this will see some play
Continuous self-mill cards mill you multiple times over different turns, like Deranged Assistant and Mesmeric Orb
Eladamris Call In what may be the most basic non-permanent creature tutor, Eladamri's Call functions as a Demonic Tutor for creatures only, in that its a 2-mana spell to fetch something specific from your library

Nami (OP11-054) OP11 Alternate Art (AA) Nami (OP11-041) OP11 Leader Alt Art (AA) Monkey D Luffy (OP11-040) OP11 Leader Alt Art (AA) Zeus (OP11-106) OP11 Alternate Art (AA) Koby (OP11-001) OP11 Leader Alt Art (AA) Charlotte Katakuri (OP11-062) OP11 Leader Alt Art (AA) Shirahoshi (OP11-022) OP11 Leader Alt Art (AA) Charlotte Katakuri (OP11-067) OP11 Alternate Art (AA) Doll (OP11-008) OP11 Alternate Art (AA) Kujyaku (OP11-004) OP11 Alternate Art (AA) Jinbe (OP11-021) OP11 Leader Alt Art (AA) Capone"Gang"Bege (OP11-101) OP11 Alternate Art (AA) Monkey D Garp (OP11-095) OP11 Alternate Art (AA) Helmeppo (OP11-092) OP11 Alternate Art (AA) Kuzan (OP11-084) OP11 Alternate Art (AA) Charlotte Linlin (OP11-073) OP11 Alternate Art (AA) Charlotte Pudding (OP11-070) OP11 Alternate Art (AA) Sanji (OP11-051) OP11 Alternate Art (AA) Vinsmoke Reiju (OP11-047) OP11 Alternate Art (AA) Hibari (OP11-010) OP11 Alternate Art (AA) Jinbe (OP11-031) OP11 Alternate Art (AA) Arlong (OP11-023) OP11 Alternate Art (AA) EB-02: Anime 25th Collection EB-02: Anime 25th Collection features a mix of alternate arts, collector cards, and popular One Piece characters

At worst he is a five mana spot removal one for one that also fogs them for a turn
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Legal Oathbreaker Legal Penny Not Legal Agna Qel'a Land This land enters tapped unless you control a basic land