Professor Oak's New Theory is card #101 of 123 in HeartGold & SoulSilver (2010), a Uncommon illustrated by Ken Sugimori. At about $6.99 it is the #98 most valuable card in the set. In a HeartGold & SoulSilver booster it turns up about once every 11 packs.


















See the full HeartGold & SoulSilver card list
An ungraded Professor Oak's New Theory from HeartGold & SoulSilver sells for about $6.99. A PSA 10 is worth more, roughly $55.92 by our estimate, and a PSA 9 around $19.57.
It is a Uncommon, and it shows up about once every 11 HeartGold & SoulSilver packs.
Ken Sugimori drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open HeartGold & SoulSilver booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.