Hello! I'm making some villains for a Champions campaign that I'm writing and I wanted to see how I would design a power that causes the target to become more vulnerable particular power or type of attack. For this character, I'd like for enemies affected by her water blast to take increased damage from an ice-based attack with the idea that being wet will cause for the targets to freeze easier. I guess it's technically a drain, but I can't find a way to make it worthwhile from the guidelines listed in Champions Complete 6E. This is the best thing I can think of right now:
Drain - 10 CP per 1d6
Limited Special Effect (-1)
Linked (-1/4 or -1/2)
However, it would be both cheaper and more effective to make this an aid, provided the water villain is fighting alone and others can't benefit from the drain on opposing targets:
Aid - 6 CP per 1d6
Limited Special Effect (-1)
Only aid self (-1)
Linked (-1/4 or -1/2)
Is there something I'm missing? The drain is only on heroes who are hit by the drain attack roll, while the aid affects any and all targets. There's no reason to take the drain over the aid or to just add DCs to the water blast, but the drain is the effect that I want. All advice is appreciated!