The Agent of Mystery - Earth (Quarter Century Secret Rare)
Yu-Gi-Oh! · Quarter Century Stampede · Quarter Century Secret Rare · RA04-EN146
Released 2025-04-11
$3.00
30-day forecast: $2.93
Live Yu-Gi-Oh! price tracking, buyout detection, and price predictions for The Agent of Mystery - Earth (Quarter Century Secret Rare) on TCG Collector Tools.
Card Text
Tuner Monster · Fairy · LIGHT · Level 2 · ATK 1000 · DEF 800 · The Agent archetype
When this card is Normal Summoned, you can add 1 "The Agent" monster from your Deck to your hand, except "The Agent of Mystery - Earth". While "The Sanctuary in the Sky" is face-up on the field, you can add 1 "Master Hyperion" from your Deck to your hand instead.
Prices Across Marketplaces
Price Forecast
| Horizon | Forecast | vs Today |
|---|---|---|
| 7 days (stable) | $2.93 | -2.3% |
| 30 days (stable) | $2.93 | -2.3% |
| 90 days | $2.63 | -12.3% |
| 180 days | $2.63 | -12.3% |
| 1 year | $2.63 | -12.3% |
Confidence 85% · Calibrated 30-day range $2.29–$3.57 · mature card · veryLow volatility
Our Forecast Track Record
What we predicted for this card, and what actually happened. We publish misses as well as hits. Anchored 2026-04-09 · at $2.82 · 111 days ago.
| Horizon | We predicted | Actual | Error |
|---|---|---|---|
| Day 7 | $2.26 | $1.98 | -12.4% |
| Day 30 | $1.88 | $2.00 | +6.4% |
| Day 90 | $1.91 | $2.94 | +53.9% |
Signal Analysis
Mixed signals. Monitor for clearer direction.
Printings (4)
| Set | Code | Rarity | Price |
|---|---|---|---|
| Ghosts From the Past: The 2nd Haunting | GFP2-EN050 | Ultra Rare | $1.16 |
| Lost Sanctuary Structure Deck | SDLS-EN002 | Super Rare | $2.96 |
| Quarter Century Stampede | RA04-EN146 | Platinum Secret Rare | — |
| Quarter Century Stampede | RA04-EN146 | Quarter Century Secret Rare | — |
Recent Price History
Frequently Asked Questions
How much is The Agent of Mystery - Earth (Quarter Century Secret Rare) worth?
The Agent of Mystery - Earth (Quarter Century Secret Rare) is currently $3.00 on TCGplayer for the Quarter Century Stampede printing. Prices update daily from live marketplace data.
Is The Agent of Mystery - Earth (Quarter Century Secret Rare) going up or down in price?
Our 30-day forecast for The Agent of Mystery - Earth (Quarter Century Secret Rare) is $2.93, with a stable trend at 85% confidence.
How many times has The Agent of Mystery - Earth (Quarter Century Secret Rare) been printed?
The Agent of Mystery - Earth (Quarter Century Secret Rare) has 4 known printings, including Ghosts From the Past: The 2nd Haunting, Lost Sanctuary Structure Deck, Quarter Century Stampede.