If we wanted to make a new one-of delve, phasing, or split second card, it was all still on the table
There are a few permanents that offer more doubling up of counters, as well as ones that save counters from removed creatures, but even without these, Counter Blitz is very powerful right out of the box
More specifically, you'll need to attend a prerelease event for the set at a Disney Park, and these promo cards will be handed out to those who are in the queue waiting to buy their Wilds Unknown products, according to those who have attended previous events.
Playing the game becomes even more enjoyable when you have a group of like-minded individuals to share the experience with
More common are kinds that change a type based on flavor, like converting something to a vampire with New Blood, resurrecting a hero as an angel warrior with Ascent of the Worthy, cursing the greedy to become, um, walls with Aurification, or resurrecting cards as zombies with Dread Slaver
Of note is that Final Heaven is her final Limit, which has to be obtained by playing a piano at a certain point in the game by inputting a specific command string