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  6. Altair, Brotherhood Mentor - Kelsien, the Plague

Magic · Secret Lair Drop Series · #1558 · Mythic

Altair, Brotherhood Mentor - Kelsien, the Plague

Magic card price for Altair, Brotherhood Mentor - Kelsien, the Plague: $14.48 market, from $12.99 at the cheapest listing, Normal printing, updated Oct 20, 2026. Full price history since Jun 28, 2024 below.

Market price · Normal · Oct 20, 2026
$14.48
−1.6% this week · −2.8% in 30 days
Buy on eBay →
1 day−0.4%
7 days−1.6%
30 days−2.8%
90 days−4.8%
1 year+24.7%
All time−46.4%

Sellers right now

$12.99lowest listing$94.71highest
Market price$14.48
Mid listing$15.34
30-day avg$14.84

Market price is what a near-mint copy actually sold for. The cheapest listing is what a seller asks today — on thin markets the two differ a lot.

Where to buy

TCGplayer$14.48
Cardmarket$17.45 €15.56

EUR converted at 1.1215 (ECB reference rate). Shipping and condition not included.

One year

$11.6152-week low$15.2752-week high
In the range78%
All-time low$4.86
All-time high$27.82
First priceJun 28, 2024
Normal · market priceCardmarket (EU, in USD)
$11.23$13.68$16.14$18.60
$14.48
Oct 2025Feb 2026Jun 2026Oct 2026
TCGplayer · via tcgcsv · Cardmarket · via MTGJSONtcgrate.com

Price story

Altair, Brotherhood Mentor - Kelsien, the Plague was released in October 2026. Launch-week prices are left out here: before supply arrives they are mostly guesses. The cheapest listing right now is $12.99, and the 30-day average market price is $14.84.

Printings

PrintingMarketLowHigh7d
Normal$14.48$12.99$94.71−1.6%

The card in play

Power / Toughness2 / 2
Type line
Legendary Creature — Human Assassin
Rules text

Assassin's Creed: Lethal Legends
Vigilance, haste

Altaïr, Brotherhood Mentor gets +1/+1 for each experience counter you have.

T: Altaïr deals 1 damage to target creature you don’t control. When that creature dies this turn, you get an experience counter.

Flavor

"There is no greater glory than fighting to find the truth."

Other printings of Altair, Brotherhood Mentor - Kelsien, the Plague

1 more · $14.48 – $14.53
All printings
Altair, Brotherhood Mentor - Kelsien, the Plague (Rainbow Foil) (1558), Secret Lair Drop Series — Magic card price −2.6% 7d Altair, Brotherhood Mentor - Kelsien, the Plague (Rainbow Foil) Secret Lair Drop Series · #1558 $14.53

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