konami yugioh deck list Duel Monsters Collection Vol 1 : r/yugioh Printable universal Deck list sheet

Warleader's Call is awesome too if you can continue to make tokens, like with Marath, Will of the Wild or Scute Swarm

Although they are best-known for MTG card grading, most Pokemon card collectors still consider a BGS 10 as the gold standard in card collecting

10 666 One Piece Card Miss All Sunday Nico Robin Sleeve, unopened, 10 cards

WOTC07 Gym Challenge Set Pokmon Binder Gym Challenge Pokmon Binder Inserts 10" x 11" Laminated Front Cover 9" x 11" Laminated Back Cover 1" x 11" Laminated Spine Optional Avery 3 Ring Binder, 1" Slant Ring Exact Count Black BCW 9-Pocket Sideloading Pages

I got really lucky with pricing

Tools: Use apps like Pricecharting or TCGPlayers scanner to catalog your cards