Decks will not often include Rapidash, but decks would want to are likely to include 2 Rapidash and 2-3 of Ponyta, the Basic Pokmon
The Court of Garenbrig makes you the monarch when it comes into play, and then at the start of your next upkeep, you get to dole out two +1/+1 counters across up to two creatures
This limitation makes it difficult to incorporate into decks with varied strategies
A good example is the Avatar: The Last Airbender set, where many new lessons were printed, but without a single learn card in the set
Rainbow alone is sort of like suicide as it brings you down to the unmagical 120 HP easier-1HKO-range, and, unless you run F Energy, getting two Prism on this guy can be quite tricky
Look at the way the deck is designed everything is at instant-speed