Once during your turn (before your attack), you may search your deck for another Unown and switch it with Unown. (Any cards attached to Unown, damage counters, Special Conditions, and effects on it are now on the new Pokémon.) If you do, put Unown on top of your deck. Shuffle your deck afterward. You can't use more than 1 Shuffle Poké-Power each turn.
Attacks
Hidden Power
Flip a coin. If heads, your opponent returns the Defending Pokémon and all cards attached to it to his or her hand. (If your opponent doesn't have any Benched Pokémon or other Active Pokémon, this attack does nothing.)
How much is Unown #R/115 worth?
Unown #R/115 is a Rare card from Unseen Forces (2005) — today it trades at roughly $50.36 ungraded. Across the 2 printings we track, copies run anywhere from $59.01 to $392.88 depending on the version you're holding.
Grading changes the math on this one: a PSA 10 is valued around $279.99, roughly 5.6x the raw price, while a PSA 9 sits near $72.00.
We update this valuation every night from live market data and verify it against real completed sales — see the chart above for how Unown has moved over time.