Professor Onyx
Legendary Planeswalker — Liliana{4}{B}{B}
Magecraft — Whenever you cast or copy an instant or sorcery spell, each opponent loses 2 life and you gain 2 life. +1: You lose 1 life. Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard. −3: Each opponent sacrifices a creature with the greatest power among creatures that player controls. −8: Each opponent may discard a card. If they don't, they lose 3 life. Repeat this process six more times.
Colour identity Black · Magecraft
In short
Professor Onyx has 5 listed printings; the most valuable is the Prerelease printing from PSTX at US$17.85 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
