The sig stones are nice to fully 99x all 4-stars
Yep. Why hoard when the quicker you get Champs to max sig the the quicker you get the bonus crystal for duping. And they are good points for SA.
I usually convert mine into crystals rather than leaving them as shards, but that’s the equivalent of 5,610,000 shards.
I open bout 30 every 2 weeks to pull off last minute stunt like this.35 round basic arena, not bad eyy