Best Summoning Strategy

Hey! I’ve been playing for a couple years already, just not too dedicated, but I know the odds for summons… I don’t spend money for this game, and pretend not to do it ever (I’m also aware of the current campaign). But thanks for the advise :wink:

Wonder if I can get some help. Fairly new to the game. Only level 18 and working towards the end of season 1 and have only recently unlocked season 2. I have an ok roster of heroes but have 900 gems and working out the best way to improve the roster. I’ve attached my current teams. Only really 2 but more like 1.5 really.

Am I better to keep saving my gems until I can get a 10x and or summon a few now.

Where should I summon from in the current environment?

Thanks in advance.