You know, Confidence: -2 opp power and damage, min 2 doesn't seem that overpowered. With Frozn bonus you get both effects at once, but with that one it's either or. Not taking strategy aspect into calculation, since one just can't calculate it. Bigger problem is fitting that onto the card.
Coinfidence: -2 opp. Power & Damage min. 3, perhaps?
No wait... That'd be an entire clan full of potential Mokras! AAAAAAHHH!!!!
What can I think of...
-3 opp. power min 6. Finally, something against Ambre!
Defeat: -1 opp. life min 1. Frozn gain another ally. They need it.
+1 power & damage. Boring, but practical.
+1 pillz. Not too interesting but it's new at least.
+2 pillz. Now that'd be interesting. And also very OP, probably.
-1 Pillz every turn min 5. Like poison, but kills pillz per turn instead. I don't know if this min is the best idea tho'.
+1 Pillz every turn max 7. The opposite. Again, may need a better min. And should probably not stack as well.
+10 damage versus bald chicks and art thieves. 'cuz I hate those 2 :p
If there's ever gonna be a confidence clan, it probably will be something that's half offensive and half defensive, to counter Frozn. Like with what you/I said, if you want to keep the confidence ongoing you have a weaker all-stars bonus, Or you can use a turn to soften a hit with the DR but to stand bonusless for that clan's cards.
Your ideas... Fei. Bill. OK. Weak. OP. I thought we established that as burn. Umm.. Chill? And what do you have against Odile?