Two pack designs 参 (3) and 肆 (4) (referring to Seasons 3 and 4). This set has a different composition than previous sets so we know it's a separate set. A lot of official information said “about 100 cards” but there are 101 SP + Regular cards in this set.
You got the present card by mailing in 16 points collected from the inserts in the pack by the deadline.