Disruption existed since base set, it's a part of the game that encourages learning consistency and board stability on your own side #20 So we are officially starting the "ex Pokemon only" era
In fact, you don't even have to worry about the mana cost if you use something like Pentad Prism (already in the deck) as its charge counters will make you all the mana you need
Focusing on rare, vintage cards, such as LOB Blue Eyes (1st edition), is a safe investment as they will always be in demand
Everyone can get in on the fun with versions easily accessible from Sol Rings in Commander decks and bundle promos, but if you want to truly set your collection up with a shiny new bauble, the serialized Rings of Power are perfect for you
I built two decks around her way back when here - The Kitchen Table: The Next 100 With Glissa - Star City Games in a First 100 with the power stuff and the goods and then the Next 100 with all new cards for you