Pokémon · HeartGold & SoulSilver
Professor Oak's New Theory
HeartGold & SoulSilver · #101 · Uncommon · 2010
Listings
No active listings
From
—
Market reference
$0.90
TCGPlayer
Current listings on The Game Traders
No active listings for this card right now.
Card facts
Quick reference for collectors and graders.
- Set position
- 101 / 124
- Release year
- 2010
- Rarity
- Uncommon
- Subtype
- Supporter
- Illustrator
- Ken Sugimori
- Series
- HeartGold & SoulSilver
About this card
You can play only one Supporter card each turn. When you play this card, put it next to your Active Pokémon. When your turn ends, discard this card.
Shuffle your hand into your deck. Then, draw 6 cards.
Tournament legality
Current legal status across competitive formats.
Pricing reference
Latest snapshot from the upstream catalog. Actual marketplace prices fluctuate by condition, edition, and grade — use this as a reference, not a quote.
TCGPlayer (USD)
Updated 2026/06/09| Variant | Low | Mid | High | Market | Direct Low |
|---|---|---|---|---|---|
| Normal | $0.25 | $0.76 | $19.98 | $0.90 | $1.96 |
| Reverse Holofoil | $4.00 | $6.42 | $63.10 | $6.92 | — |
Cardmarket (EUR)
Updated 2026/01/16| Variant | Price |
|---|---|
| 1-day average | €0.20 |
| 7-day average | €0.23 |
| 30-day average | €0.20 |
| Low | €0.02 |
| Trend price | €0.27 |
| Low (excellent+) | €0.02 |
| Reverse holo low | €0.44 |
| reverseHoloAvg1 | €0.44 |
| Reverse holo 7-day | €0.94 |
| reverseHoloSell | €1.04 |
| averageSellPrice | €0.20 |
| Reverse holo 30-day | €1.75 |
| Reverse holo trend | €0.64 |
Frequently asked
How can I tell if my Professor Oak's New Theory is real?
Professor Oak's New Theory is not on our list of commonly-counterfeited cards, but counterfeits exist across every set. Check the back-light test (real cards have a black inner layer that blocks light; counterfeits glow through), the rosette dot pattern on the back under magnification, font weight and kerning on the card name, and the holofoil pattern if applicable. For high-value copies we recommend submitting to a professional grader (PSA, BGS, CGC) for tamper-evident authentication.
What is Professor Oak's New Theory worth?
As of the latest data, the current market reference price for Professor Oak's New Theory is $0.90; there are no active listings on The Game Traders right now. Actual value depends on condition, grading, edition and printing variant — graded high-condition copies (PSA 9–10) trade at a substantial premium over raw copies.
What set is Professor Oak's New Theory from?
Professor Oak's New Theory is from the Pokémon set "HeartGold & SoulSilver" in the HeartGold & SoulSilver series, released in 2010.
What rarity is Professor Oak's New Theory?
Professor Oak's New Theory is a Uncommon card in the HeartGold & SoulSilver set.
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Other Professor Oak's New Theory printings
Same Pokémon card across other sets and rarities.
