I've given this issue a lot of thought as I am gearing up to play more tournaments towards the end of the year. EKaya presents a pretty known threat to most opponents, she's going to minimize your shooting and try to cripple you with the alpha strike. She has all the standard circle tricks which are really dependent on your opponent's level of experience. The best challengers have bogged me down with high arm or body count, limited my movement or have ways around stealth. She is solid against against medium to low body-count armies, magic reliant opponents, and shooting without copious anti-stealth.
That being said, who should play Starsky to eKaya's Hutch? The Baldur's seem ideal for scenario and attrition, pKrueger for anti-troop, and perhaps Kromac for a different variety of axe to face aggression. I also like this group because they play fairly beast heavy which matches my play-style best. I do not enjoy myself or succeed with infantry machine.
I would love to see your lists and hear about your tournament experiences. I know eKaya isn't considered an "A-list" caster for us but I think she is fantastic. If I can identify her weak match-ups and select a useful counter I will be on solid footing for tournaments.
The list I run for eKaya currently is:
2x Shifting Stones
Lord of the Feast
TL/DR summary: What caster and 50 point list would go well with my eKaya army for 2 caster tournaments?