Originally Posted by DragonSR

If you manage to get all cards before the event ends, I recommend that you stock up on Cards Reveals which are 100 Shards each. That's just me doe. I don't think the SR Wild Card 1s are worth it. I however managed to get all three cards with a +7 boost.

This is exactly what I plan on doing. SR1s are common enough that I don't care. CRs are rarely 'free' unless they are event rewards, and I'm running out of them.