AbilityFLASH
Once during your turn, when you put Unown from your hand onto your Bench, you may look at the top 5 cards of your deck and put them back on top of your deck in any order.

Unown is Pokédex #201, generation 2 (Johto). Unown is a Basic Psychic Pokémon with 50 HP.
Unown sits at 55/123 in HeartGold & SoulSilver, position 55 of 124. Before it is 54 Unown, and after it is 56 Wigglytuff. The set belongs to the HeartGold & SoulSilver series. It was released on February 10, 2010. The printed size is 123. This checklist is longer, at 124 cards. The listed rarity is Uncommon.
FLASH is listed as Poké-Power. Once during your turn, when you put Unown from your hand onto your Bench, you may look at the top 5 cards of your deck and put them back on top of your deck in any order. The attack Hidden Power lists 10 damage. The cost is Psychic. Weakness is Psychic ×2. Retreat cost is 1. The flavor text reads "Its flat, thin body is always stuck on walls. Its shape appears to have some meaning."
Unown (#201) has 95 other cards in the catalog. Those other cards are in 18 sets. The other printings with a release date run from 1999 to 2026. The earliest other card is Unown [J] 38/53 in Wizards Black Star Promos (1999). That card is named Unown [J], while this one is Unown. That card lists 40 HP, and this one lists 50 HP. The rarity there is Promo, and here it is Uncommon. Hideki Kazama illustrated that card, and Hideaki Hakozaki illustrated this one. 67 other cards of Unown list a different HP.
The illustrator line reads Hideaki Hakozaki. I count 35 other cards in the catalog with that illustrator.
HeartGold & SoulSilver set binder is where a full HeartGold & SoulSilver set goes. This card fills one slot there. A generation binder holds one card of each species. Unown can fill a slot in Generation 2 binder (Johto). Themed lists that include this exact card are Unown. I still need this card.
Once during your turn, when you put Unown from your hand onto your Bench, you may look at the top 5 cards of your deck and put them back on top of your deck in any order.
Its flat, thin body is always stuck on walls. Its shape appears to have some meaning.
HeartGold & SoulSilver, in the HeartGold & SoulSilver series. It was released on February 10, 2010. The printed size is 123.
55/123. It is entry 55 of 124 in this checklist.
Hideaki Hakozaki. The catalog lists 35 other cards with that illustrator.
Uncommon.
Unown #201, generation 2 (Johto).
Hidden Power (10).