Can anyone tell me what cards come out of this? I was closing up last night and found this in my inventory! I must have missed the event! LOL!

Just absolutely random? I ask because I only need 2 more cards to bring my collection current at 196. So I am thinking I should sell it rather than open it.

The Booster packs tend to give higher rarity cards, ( 90-99) But they can give as low as 75.