Professor Onyx

Professor Onyx

Legendary Planeswalker — Liliana

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.

symbol:loyalty-minus 8: Each opponent may discard a card. If they don't they lose 3 life. Repeat this process six more times.

Latest Decks as Commander

Professor Onyx Discussion

Safaris on Liliana, Heretical Stealer

6 days ago

You might look at Chain of Smog. The discard is fine on its own and with Professor Onyx you instant win by targeting yourself.

zAzen7977 on Always Standard Discard

1 month ago

Hey legendofa, I’m right there with you regarding the lack of good discard interactions in standard. But I think it can work in Mono-Black. Check out what I’ve been working on, I recently updated it:


In my build I run no creature or hand exile effects, since those effects are non-bo’s with Tergrid. We want to be able to keep the stuff we force the opponent to discard and ‘sac. Plus I think you could run more 1-drops on the mainboard, like Dread Fugue and Bloodchief's Thirst.

Acquisitions Expert is strictly better than Elderfang Disciple since both hit 1 card of the opponent’s choice, but the Expert has 1 additional toughness.

Also, Professor Onyx is a good option for a finisher, since her ultimate can do up to 18 damage to the opponent, depending on how empty the opponent’s hand is. And she really synergizes well with Tergrid!


5 months ago

I’m at a control player at heart (I knew I’m an awful person) so when I came across the decklist I was happy! First I’ll do some suggestions (I’m assuming you know about cards such as Demonic Tutor so I’m not going to mention cards like those). The first thing I noticed was that Professor Onyx was in the list, so why not make her an infinite combo with Chain of Smog. Another suggestion would be Toxic Deluge as it works especially well in this deck because of the commander’s ability. Finally, perhaps adding Stasis to really slow things down (once again I acknowledge I am a bad person).

Now for some cuts. The first cards that stood out to me were Ghostly Prison and Propaganda. I feel that these cards are weak for the power level you’re aiming for as the higher power level, the less combat damage matters. Another card would be Hero's Downfall. I’m not a huge fan of this card as it feels clunky. Maybe replace it with Deadly Rollick.

Those are a few suggestion! Take them or leave them.

Crow-Umbra on Triple Six, Five, Forked Tongue [Primer]

5 months ago

Thanks for the suggestion Kalkris. I honestly hadn't considered that combo for this deck. I think after the Chain of Smog + Professor Onyx combo blew up, it fell off my radar. The endless spoiler seasons have also made it harder to keep track of everything lol.

The only combo I was considering adding so far was Dualcaster Mage + Twinflame; I figured Dualcaster could be a decent value piece for copying spells, regardless of the combo. After the couple of games I played this weekend, I have been kicking the idea around the back of my mind of a more spell-slinger dedicated Prosper list. At the very least, I'd like to add maybe one or two more pieces of instant speed interaction, perhaps Withering Boon

bradtheimpaler13 on Dina

7 months ago

Got room for Professor Onyx she can combo out with the chain and shes pretty cool in general.

grennpowerhouse on Tergrid's Asylum

8 months ago

I would seriously recommend considering Professor Onyx and Braids, Cabal Minion

As for what to cut I would say Asylum Visitor , Syphon Mind (it's good but for 4 mana it doesn't seem worth it), I hate to say this but maybe Sensei's Divining Top , Temple Bell (It does give you card advantage but it also gives everyone else card advantage), Wheel of Torture (At best it can only deal 2 damage).

That's all I have time for now but I will try to recommend more later

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