Even factoring in the Paldea Evolved Booster Packs that are getting hard to find, it makes sense to pick this beautiful promo card up now whilst it's still cheap
Keen Buccaneer Keen Duelist Keen Glidemaster Keen Sense Keen-Eared Sentry Keen-Eyed Archers Keen-Eyed Curator Keen-Eyed Raven Keeneye Aven Keening Apparition Keening Banshee Keening Stone Keensight Mentor Malcolm, Keen-Eyed Navigator Nine-Fingers Keene Nylea, Keen-Eyed Senu, Keen-Eyed Protector Taii Wakeen, Perfect Shot Vazi, Keen Negotiator
Gozen Match/Rivalry of the Warlords Gozen Match and Rivalry of the Warlords are both cards you can play in Karakuri, because all Karakuri monsters are earth-attribute and machine type
While it does require the player to discard five cards, they can then draw two and then draw an additional card per draw
Seeing one in person would be incredible, as they are an iconic part of Yugiohs history
Valuable singles: a card sleeve plus a rigid toploader, or a 9-pocket side-loading binder so cards can't slip out when the binder is lifted