What use are Ex levels?

[Bosbrand]

Hey guys,

I've just reached lvl 50, and upgraded some cards to 100+5, but I'm wondering why I actually bothered. No new graphics, a SED increase of 3 per level. It seems absolutely useless to me.

Are there other benefits I haven't seen?

Thanks!

[zephusdragon]

None I've found either, but since it's really easy to get a lot of the gatcha girls into the EX levels those +3 per ex start to add up.

[Opalia24]

In Coluseum (PvP) EX levels matters but othervise EX levels dont really matters.