I've been playing this game a couple weeks and have summoned more than I can count... actually, I just filled the summon points to max level 3/3 (finally), and it game me a 6 star rare that I already have at 6 stars. The fact is: I have NEVER gotten a rare from a summon. Never.
Note: most of my summons were a 10+1 I saved up for... and from both premium and hero tabs.
I appreciate the fact that rares are actually rare, but this is a little much.
I was considering spending my rebirth gems (@3.5k now), but now feel like I need to save them for the legendary @10k, because who knows if I will ever summon or earn a Legendary any other way.