Board Thread:General Discussion/@comment-32616717-20180430192130/@comment-33829961-20180430195253

1) The next discounted summon is who knows how long away. The next banners are probably LR Gogeta/Vegito and I highly doubt they would do a discounted with those.

2) 20 for 100 stones is pretty nice however you can get a fair amount just from trading in other resources to Baba (puddings, radishes, etc) since you are still relatively new given your only rank 130. I'd say the 20 for 100 banner is for those of us who may have exhausted the non-stones way of getting Kais.

3) Units for LR Goku event are completely farmable (since you can only use Strike or Story cards), I wouldn't use Kais on them.