u/imipenem3

Do you think its better to level up your troop defense vs HP? I'm assuming ideally you want both equally leveled but if you had to choose like for example on the soul stones, which would you prefer?

I recently found out that you can save these keys even after the event ends. Has anyone done the calculation on approx how many keys would need to be saved up to get the 6 star and 10 star castle skins?