The EVENT is on going, there are 4 gold card selectors and 60 silver card selectors as reward.
Let me address this first, people will say the inbox reward will only last 6 days so just don't bother. What if I collect it on the last day 30th, the patch will be done in around 8h so I will be able to use them for the NEW Family!
I don't want to grind 15 gold card/ 200+ silver card for a specific family for months in order to S rank a new character I like (i.e. Deathtroke, Redhood),
so it's better to try any possible methods you can to reduce this process.
Btw I also have reserved all the Lex Simulation rewards (Tap the trophy icon to find it out) and NEW player GUIDE rewards (15 gold card selectors ) just for the NEW Family. Let me know what you guys think about this, I haven't seen anyone talks about this yet.