For a while i suspected another damage reduce clan (like 3 min 4) but with Vholt i doubt it
i would like a combo bonus (+1 power and damage) or a somewhat detrimental bonus (+3 power minus 1 damage)
with 3 plus attack and 3 minus attack i don't see one of them in the near future
how about minus 1 pill min 1 (the total pillz your opponent uses on the card is decreased by 1)
It would be nice to see something entirely different.
perhaps a clan that has -2 self damage, which would Explode all over Nightmare.
so, cards would have slightly higher than normal damage, but it would be reduced because of their bonus.
(unfortunately, these cards would slip into non related decks like Pussycats mono decks, would suddenly have nasty 6/5 2 stars)
you could also try the same for power, or maybe have a courage -4 damage min 1, which would have some game changing properties.
Courage Poison 2 min 1 <- courage bonuses are too easy to stop anyway, so it wouldn't be so game breaking
or, we could go with no bonus, just good abilities.
there are a lot of clan bonuses you could take on.