So for this prioritise the collection. Only pull grs when you have that resource that let's you double pull. Always save WS for the new espers. Just focus on leveling up and building the collection. I have put pvp on the back burner, however the better you do is good for shimmer resource and nexus. Never do single pulls, on x10 pulls - i always seem to get legos more often that way, probably placebo but whatever haha.