I bought 3 cards yesterday and all 3 are the new rare card. This normal?

I am new to the game and as you can see, I don't have that many cards unlocked. All the ones I do were from playing. Yesterday a friend said you could spend essence on cards and I had enough to buy 3. All three were the rare card. I donated one to the guild and still have 2. Is that a glitch or something? Or am I just incredibly lucky?

One secret card is very lucky. Three in a row though wow congrats. I don’t have a secret card still