Hey guys just thought I would throw this tip out there! When you first get to 50 you will unlock summons. When you first fight a summon you will be rewarded with 2 runes. If you get a summon through the summon pulls, then you will not be able to get the 2 runes from first battle. So fight every summon (blues at 50, purples at 53) before you spend any of your summon scrolls. Doing your free pulls should still be fine, just don't do any extra until you have fought every summon once.