65 Roaring Moon Themed Card Sleeves
Using two mana to get to untap and have access to all your mana (and your best seven cards, which you do have to discard to hand size) is often enough to send you over the edge
It could be that scannable codes in packs (like in Pokmon) are added so players are incentivized to buy the actual cards, but right now thats pure speculation
Finally, if your opponent summons a monster in Attack Position while Slifer is on the field, it loses 2000 ATK, and if it hits 0 via this effect, its destroyed
While this isnt what the RC wants for the format, it wouldnt be a problem if this Golos homogenization had stayed in the higher-power end of the format, but unfortunately it had begun to spread down to the middle tiers of the format, leading to a great decrease in the diversity of commander choice in five-color decks