I was just wondering how would you make a positive buff negative and vice versa. I have an ability based off criple however its actually a positive ability (it has negative values) and I need to know how to make it into a positive buff
Negative buffs will be colored red in the stat card, but you can use a color code to change it to green as DioD said. The other problem is that they will get dispelled incorrectly by dispel abilities, you will have to trigger your own dispel abilities, or use my Buff System.
Did you actually try to order a friendly unit to cast it, and make sure that the spell can be cast on friendly units? Usually negative buffs turn unit's icon in red (in the window that appears when more units are selected) but when I made a friendly unit cast the spell, the red icon disappeared. So I do not know if it treats the buff as negative in such a situation. I suggest you test it!