Professor Onyx [Duskmourn: House of Horror Commander]
![Professor Onyx [Duskmourn: House of Horror Commander]](http://primetimetempe.com/cdn/shop/files/441cfdd3-c221-56eb-b630-2e90697639df_1000x1000.png?v=1773523026)
![Professor Onyx [Duskmourn: House of Horror Commander]](files/441cfdd3-c221-56eb-b630-2e90697639df.png)
| Set: | Duskmourn: House of Horror Commander |
| Type: | Legendary Planeswalker — Liliana |
| Rarity: | Mythic |
| Cost: | {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.
+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.
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