Signal track record

Experimental

Cardstock's reprint and ban risk signal is unproven — so rather than claim it works, we keep it honest in the open. Below are the cards the model is flagging right now, recorded before anything happens to them. As those cards actually get reprinted or banned, we'll show what their price did — a blind, as-of record that can just as easily prove the signal wrong.

How we keep it honest

Blind & as-of. A card's score is recorded the day it's computed, before we know whether it gets reprinted or banned. Nothing is scored with hindsight.
No leakage. Cards already spoiled in an announced set are a confirmed reprint, not a prediction — they're excluded from the flags below, which are genuine forward calls.
Recording since July 5, 2026. The resolved scorecard needs a flag from well before an event plus the price reaction after it, so the first results are expected in late 2026 and build from there.

Currently flagged

as of October 18, 2026

Highest reprint risk

Cards the model thinks are most exposed to a value-dropping reprint — not yet announced.

Ink-Eyes, Servant of Oni

$14.07

Sphinx Ambassador

Sword of Body and Mind

Highest ban risk

Cards most exposed to a ban or restriction in a major format.

Thassa's Oracle

$24.60

Scored daily across the investable market — every card worth real money or heavily played, not just cards anyone owns. A research readout, not financial advice — never a “sell” call.

Resolved outcomes

Card	Event	Flagged	Price move
Farseek	Reprinted · January 1, 2027	6	+131.58%
Darksteel Monolith	Reprinted · December 31, 2026	31	−3.15%
Glimpse the Impossible	Reprinted · December 31, 2026	22	—
Unearth	Reprinted · December 31, 2026	28	−9.57%
Oboro, Palace in the Clouds	Reprinted · December 31, 2026	44	+4.80%
Windfall	Reprinted · December 31, 2026	30	+6.61%
Baleful Strix	Reprinted · December 31, 2026	29	+137.60%

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