Buy / view
TCGplayer is an affiliate link — we may earn a commission, at no extra cost to you.
Professor Onyx
Strixhaven: School of Mages Promos (PSTX) · #83s · mythic · mtg
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.
−8: Each opponent may discard a card. If they don't, they lose 3 life. Repeat this process six more times.
DeckSpec Pricei
$17.92
Condition
Weighted composite · smoothed against one-off swings.
Current prices
Condition
FoilNM
| cardkingdom | $21.99 | 2026-07-24 |
| Cardmarket | ≈$18.73 | 2026-08-08 |
| TCGplayer | $17.52 | 2026-08-08 |
Non-USD sources (e.g. Cardmarket, EUR) are shown converted to USD at €1 ≈ $1.15 — indicative, not an exact quote.
Prices update daily · last checked Sun Aug 09. Indicative, not offers — how we price.
Price history (last 180 days)
Condition key
NM Near MintLP Lightly PlayedMP Moderately PlayedHP Heavily PlayedDMG Damaged
Recorded prices are Near Mint; LP–DMG are estimated from standard hobby multipliers (foils discounted more steeply) — a guide, not a market quote.
Add to collection
Watch price
Other printings (5)
Cards like this
Sedgemoor Witch
PSTX #86p
$9.79
Sedgemoor Witch
PSTX #86s
$8.71
Sedgemoor Witch
STX #306
$11.20
Baleful Mastery
PSTX #64s
$8.35
Valgavoth, Terror Eater
DSK #120
$17.52
Liliana, the Last Hope
MED #GR2
$17.48
Takenuma, Abandoned Mire
PNEO #278s
$17.57
Bolas's Citadel
FCA #7
$17.42
Liliana of the Dark Realms
SLD #1107
$17.68
Witch-king of Angmar
LTR #423
$17.78
Vraska, Betrayal's Sting
ONE #337
$17.78
Vito, Thorn of the Dusk Rose
M21 #362
$17.24
Compare Professor Onyx vs:Sedgemoor WitchSedgemoor WitchSedgemoor WitchBaleful MasteryValgavoth, Terror Eater
Complete the set — Strixhaven: School of Mages Promos
You have 0 of 164 (0%)Most valuable cards in this set
PSTX #6s
Wandering Archaic // Explore the Vastlands
$23.35
PSTX #95s
Crackle with Power
$21.14
PSTX #163s
Beledros Witherbloom
$14.46
PSTX #245s
Velomachus Lorehold
$12.27
PSTX #148s
Blex, Vexing Pest // Search for Blex
$11.79
PSTX #95p
Crackle with Power
$10.71
PSTX #230s
Shadrix Silverquill
$9.85
PSTX #86p
Sedgemoor Witch
$9.79
PSTX #165s
Blade Historian
$9.50
PSTX #86s
Sedgemoor Witch
$8.71
PSTX #172s
Culling Ritual
$8.58
PSTX #64s
Baleful Mastery
$8.35