41x63mm card sleeves Premium Mini USA Yellow 41 x 63 mm (50) and depending on the type of person you are you will either use them sparingly or in every game you own Sleeve Kings Mini USA Card

"Counter Gate" resolves and Kaiba draws (from the ground rather than the Deck) "Obelisk the Tormentor"

Return another target nonland permanent to its owner's hand

You can then summon the Xyz monster from your Extra Deck, with a Rank equal to those monsters Level (example: A Rank 4 monster for two or more Level 4 monsters), placing the monsters used for its summon underneath the Xyz monster as Xyz Materials

Green has a huge stable of artifact and enchantment removal, so having a spell with additional functionality is quite good

Try using it together with "Elemental HERO Heat" which has an effect that raises its ATK by 200 points for every Elemental Hero on your side of the field