Professor Onyx

Professor Onyx is a Legendary Planeswalker — Liliana card from the Magic: The Gathering trading card game.

Its ability reads: "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."

Professor Onyx has a mana cost of {4}{B}{B}, which equals 6.0 total mana (converted mana cost/mana value).

It requires B mana to cast.

Mana cost is the amount and type of mana required to cast a spell in Magic: The Gathering.

Professor Onyx's mana cost of {4}{B}{B} means you need to pay that much mana from your lands or other sources.

Colored symbols (W=White, U=Blue, B=Black, R=Red, G=Green) must be paid with that specific color, while numbers can be paid with any color.

Converted mana cost (now officially called "mana value") is the total amount of mana in a card's mana cost, regardless of color.

Professor Onyx has a mana value of 6.0. This is important for effects that care about a spell's total cost, like cascade or cards that say "mana value 3 or less."

Oracle text is the official, current rules text for a Magic card as maintained by Wizards of the Coast. It supersedes any printed text on older cards.

Professor Onyx's current oracle text is: "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."

Price data for Professor Onyx is currently unavailable. Check TCGPlayer or Card Kingdom for current prices.

You can purchase Professor Onyx from major MTG retailers including:

• TCGPlayer (USA)
• Card Kingdom (USA)
• Cardmarket (Europe)

Prices vary by condition and printing. Check multiple sellers to find the best price.

Foil cards have a shiny, holographic finish that makes them more collectible. They are functionally identical to normal cards but typically cost more due to their rarity and visual appeal.

Format legality information for Professor Onyx in Standard is not available.

Standard is a rotating format that only allows cards from the most recent sets.

Professor Onyx is Legal in Modern format.

Modern includes all cards printed in a standard-legal set from 8th Edition forward.

Professor Onyx is Legal in Commander (EDH) format.

Commander is a casual multiplayer format where you build a 100-card singleton deck around a legendary creature.

Professor Onyx is Legal in Pioneer format.

Pioneer is a non-rotating format that includes all standard-legal sets from Return to Ravnica forward.

Professor Onyx is Legal in Legacy format.

Legacy allows almost all cards ever printed, with a substantial ban list for balance.

Professor Onyx is Legal in Vintage format.

Vintage is the most permissive format, allowing almost all cards with only a minimal ban list. Some powerful cards are "Restricted" (limited to 1 copy).

Format legality information for Professor Onyx in Pauper is not available.

Pauper only allows cards that have been printed at common rarity in a paper or online set.

Format legality indicates which official MTG formats allow a card to be played:

• Legal: Card is allowed in the format
• Banned: Card is prohibited from play
• Restricted: Limited to 1 copy (Vintage only)
• Not Legal: Card was never part of that format's card pool

Different formats have different banned lists based on power level and game balance.

This printing of Professor Onyx is from PRM (PRM), with collector number 90088.

Professor Onyx may also appear in other MTG sets with different art or special treatments.

Professor Onyx is a mythic card in PRM.

Card rarity affects both availability and price. From rarest to most common: Mythic Rare → Rare → Uncommon → Common.

Professor Onyx was illustrated by Kieran Yanner.

Magic: The Gathering features artwork from hundreds of talented artists, and many cards have been reprinted with new art over the years.

Professor Onyx enters the battlefield with 5 loyalty counters.

Planeswalker abilities add or remove loyalty counters when activated. If a planeswalker's loyalty reaches zero (through damage or ability costs), it's put into the graveyard.