You can still run cards like Mana Confluence that would abide by the color identity rule normally to fix this, but the amount of lands that fit in this category are rather limited
The main thing to do is ensure you don't play too many
One quick note: make sure to buy extra of both the inner and outer sleeves because while your cards will be protected, it doesnt mean your sleeves won't suffer some damage
P/T Number 412 Language English Legal Formats Commander, Historic, Legacy, Modern, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Pauper, Pioneer, Standard, Timeless Rulings (6/16/2023) If you don't have an enchantment, instant, or sorcery card in your hand, you won't be able to pay Saruman of Many Colors's ward cost
The Fall set window remained a healthy 17 (thank you, holiday break), but the Winter set went from 16 or 17 in previous years down to only 13
A clean sealed Kanto card set is a different object from an opened set with the same three cards