I'm going to buy one of thsoe weapon slot upgrades and wanted to get a 2nd sword. I am currently in 4* gear and use an ascended calibur + master blast bomb. I'd like something to help me solo jelly king or something that's kind of opposite of my calibur (I know that'll be difficult).
I was thinking something like the divine avenger, but not from jelly tokens if possible :).
Edit: I've been told a silent nightblade is pretty good (+ it'll help me get those tokens for an avenger), what are the forums thoughts on it?
Ideally, you'd want to have an elemental and a shadow sword; you would take your Calibur and the former or latter, depending on the strata.
The Divine Avenger is the best elemental sword you can get, but you'd need jelly tokens, and it's not really that necessary until T3 anyway.
The Nightblade series handles somewhat like Calibur, just minus the charge attack and with a serious bonus vs. Slime/Gremlin. If you were planning for one anyway, then yes, get it first. It'll help you get your jelly gems that much faster.