bcw thick card sleeves Penny (500ct) – Gator's Den The BCW 3 X 4 toploading thick card holders are designed to hold cards that are thicker than standard trading cards BCW Thick Card Sleeves 2

Each Fusion requires #189: "Fusionist" and two other Fusion Material Monsters

Red Zone X TRAP Continuous When your opponent activates a card or effect while you control "Red Dragon Archfiend" or a Synchro Monster that mentions it: You can target 1 card on the field

I reckon that except for the rare cards which will appreciate in value, most will remain best kept for personal enjoyment rather than investment.

For a more comprehensive dive into card grading services, this article has more information

Destroy all Spell and Trap Cards on the field

The Single Strike Urshifu possesses two attacks with the first called Beatdown which requires three colorless energies and deals 100 damage