So I am quite new to the game and do not want to reroll the account, if it takes longer, etc, I do not mind.

Current Souls:
Rosenkreuz+ prerequisites and a lvl 10 van Helsing --> aiming for Mordred

Wishing to go for a fire deck, but alas, no SSR Kamis for me, yet.
So should I save up my Jewels for some kind of event or simply roll the gacha every time I have 3000 and hope for the best?

Current Deck:

Amon 1x limit break
Nataku 1x limit break

Dazbog
Ignis
Taikoubou

Main Eidolon is Ignited Dragoon

The storyline SR Kamis and a Tsukuyomi, rest is random rare and lower