DISCLAIMER: The following build has not truly been completed - it has only +5 in Dragonflowers instead of the requisite +15. The OP hopes that you can find it your heart to forgive this transgression.
I’ve had a +10 Cynthia for a while now, but always found her base kit underwhelming. I particularly don’t like Firesweep Lance, because I end up in a lot of Enemy Phase combat.
So I tried swapping out her base kit for one that stacks Solo bonuses. Now I can have her charge straight at the enemy, kind of like the hero she aspires to be.
I’m hoping she gets a refine for dual-phase combat. I also have a Thea, and Icy Maltet shows that the right weapon could make Cynthia even better than she is now.
Thanks for stopping by - feel free to reply with your own suggested builds!