The Stern Mystic #SDY-E031
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The Stern Mystic #SDY-E031 collector guide
About The Stern Mystic
The Stern Mystic is a Flip Effect Monster, whose effect happens when it is flipped face-up, printed as SDY-E031 in Starter Deck: Yugi (2002) as a Common. It is a Level 4 LIGHT Spellcaster monster with 1,500 ATK and 1,200 DEF. Starter Deck: Yugi was one of the two pre-built decks that launched the English game in 2002, built around the cards Yugi Muto plays in the anime, with Dark Magician at its centre. Ungraded, this printing ranks 88th of the 162 Starter Deck: Yugi cards we track. The top card is Castle Walls at €356.09.
Character and collecting appeal
Spellcasters have been popular since Dark Magician, and the Type has some of the most sought-after artwork in the game.
Version and identification
This guide covers the Unlimited printing, without the "1st Edition" text below the artwork. 1st Edition copies of the same card have their own, usually higher, prices. Check the code printed below the artwork on the right: it should read SDY-E031. The E in SDY-E031 marks the European English printing. The North American printing uses a code without the letter, sometimes with a different card number, and has its own prices. It is the Common version. Commons have a plain name and no foil. Starter Deck: Yugi has 3 other printings of The Stern Mystic: SDY-033 (€0.73), SDY-033 1st Edition (€3.48) and SDY-E031 1st Edition. Each has its own price, so match the code, edition and rarity exactly.
Price history
Today an ungraded copy of this printing sells for about €2.01. Our monthly prices for it go back to July 2024. Over the last 12 months ungraded copies are up 72%, and flat in the last month. Its highest monthly ungraded value was €3.58 in January 2026, 44% above today. Of the 3 printings of The Stern Mystic we track, this one ranks 2nd by ungraded value. The most valuable is Starter Deck: Yugi SDY-033 1st Edition at €3.48.
Investment potential
In its favour: steady demand, with ungraded prices up 72% in a year; a price well below its January 2026 peak, which some collectors see as room to recover; it comes from the first years of the English game, which are no longer printed. Past prices do not guarantee future ones. This is not financial advice.
Before you buy
Expect to pay around €2.01 for a clean ungraded copy; played copies sell for less. Ask the seller to show the code SDY-E031, the missing "1st Edition" text and the Common finish clearly in the photos, as listing titles often mix up printings. Cards from 2002 often show white wear on the back edges and corners, so ask for photos of the back before you buy.
Card details and image from YGOPRODeck. Yu-Gi-Oh! is a trademark of Konami; Search Cards is not affiliated with Konami.
Most popular Starter Deck: Yugi cards
How much is The Stern Mystic #SDY-E031 (Starter Deck: Yugi) worth?
As of , an ungraded copy of The Stern Mystic #SDY-E031 from Starter Deck: Yugi sells for about €2.01 (about $2.25). These values are based on 7 recent completed sales, the latest on 15 Jun 2026. Ungraded values are up 72% over the last 12 months.
Prices are market values from completed sales, shown in euros (converted from US dollars) and updated every few hours.
The Stern Mystic #SDY-E031 FAQ
How much is The Stern Mystic #SDY-E031 (Starter Deck: Yugi) worth?
Ungraded, The Stern Mystic #SDY-E031 (Starter Deck: Yugi) is worth about €2.01 (about $2.25). Based on recent completed sales as of 23 Oct 2026.
Is The Stern Mystic #SDY-E031 (Starter Deck: Yugi) going up in value?
Ungraded The Stern Mystic #SDY-E031 values are up 72% over the last 12 months and unchanged over the last month. The highest monthly ungraded value was €3.58 in January 2026.
When was The Stern Mystic #SDY-E031 (Starter Deck: Yugi) released?
The Stern Mystic #SDY-E031 was released on March 29, 2002 as part of Starter Deck: Yugi.