I fogot about playing enough games for the 3rd reward this last weekend. Does anyone know if the 3rd card will be avalable to get with a joker card later or not?

No, FX card will not be avalable again.

Does anyone know if the 3rd card will be avalable to get with a joker card later or not?

Sorry, but the EX cards currently can only be Obtained During the Event.
Once the event is over, the EX card is no longer available,

Thex for the update

Too bad we can't eventually get missed event cards. I would have liked to get the Stolling though Cali one. If they want you to get them in the event why do they list the cards in the store without a way to buy them? Maybe in the future they can make them available with 2 joker cards or some other way so we don't miss out entirely.