On top of giving near immunity to counters, red and black have a ton of creature and artifact removal effects, and with Shadow giving them split second, you can get around most tricks that other colors can use to protect their permanents
C Common Naturia Butterfly X EARTH Level 3 [ InsectTunerEffect ] ATK 500 DEF 1200 Once per turn, when your opponent's monster declares an attack: You can send the top card of your Deck to the GY, and if you do, negate that attack
Umbreon EX Card Number: XY10 082/078 Rarity: SR The First Edition Umbreon EX card showcases the beloved Dark-type Eeveelution, Umbreon, in a captivating pose
These trends directly impact modern card sleeve machines
However, all players gaining no max handsize is a drawback, since I do usually want my opponents to discard down to seven cards to keep some advantage