I need a wind spell and stone spell with damage break for my red mage. I'm not sure which to invest in. I was told that the -aja level will be the way of the future for single target, but only at 5*. What happens at 5*? A cost reduction? I find the -aja level to be pricey. Stoneaja still isn't farmable as far as I am aware, but neither is Stoneaga. -aga level seems to have been good from playing with Fireaga. But they aren't as spammable as single target. Aero and Stone are good damage, but might not be room for single target in the deck for future content.