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Veronica, Dissident Scribe

Legendary Creature — Human Artificer Rogue

Menace Whenever Veronica attacks, you may discard a card. If you do, draw a card. Whenever you discard one or more nonland cards for the first time each turn, create a Junk token. (It's an artifact with ", Sacrifice this token: Exile the top card of your library. You may play that card this turn. Activate only as a sorcery.")