baseball card protective sleeves 200 Hard Plastic, Arjiekwei 3"X 4" Cards Protectors Plastic, Trading Card Holder for Trading Sports Baseball Football Game Cards (100 Hard Sleeve + 100 Soft Sleeves) : Toys & Games [Protection and Storage] 25pcs 3" x 4" TopLoaders

(Dont apply Weakness and Resistance for Benched Pokemon.) [C][C] Rolling Dash: 60+ damage

These don't specifically mention venturing, but they do amplify the effects of triggering your dungeons' room abilities

A card like Volrath, the Shapestealer can copy an Army, but Volrath specifies that it becomes a 7/5 until end of turn, which means it survives and you can amass onto it

This generous gift-giving bird has a very Santa-like appearance to it and always carrying its sack to quickly deliver presents or food to other Pokmon or humans

Just as mentioned by Nitz, the sheet contains not only test print Pokmon cards but also MTG