Dragon names typically throw away syntactic relationships in favour of a simple list of three syllables. Each part should be a noun, strong verb, or strong adjective. One way to fulfill this template would be to set the Search to "nouns" and look for a monosyllable that means something to you personally while fitting in some order with jul and kaal.

If you want as little extra meaning as possible besides the two given parts, a neat albeit cheaty trick is to use ro. Jul ro kaal "humankind balance defender" can be reanalysed as julro kaal "humankind's defender".