@Spreader: First of all, the classic
Hawkins-
Tula-
Tyd-
Smokey Cr is usually used for a
Piranas half deck. So this leaves mono...
Scubb is simply a beast in mono, so if you only have space for one 4*, he should be used over
Kristin. Even
Sting can sometimes be used over
Kristin, though it's rare. (
Katan is mediocre - I would use
Kristin over her any day) She is still used fairly often - your guild
Leader simply adores her.
Regarding confidence though....yes, you can't "stop" her all-stop ability. So, using your metaphor, if you see snow coming, you can't stop the snow by punching in the air. However, you can DODGE it. If I have a card like
Tyd or Noodile, and I lose the first round, I can just throw a
Tyd or Noodile out there. Their 8 power is a pain to overcome, and
Kristin will do absolutely nothing (8 power against 7 power??). And if you won the first round, you're likely to be down in pillz as well (though this is less common with the pillz-plundering
Piranas....say that three times fast), so Kristin's ability may be even harder to guarantee. Then you try to overpill the next round to gain that confidence....at that point your opponent might have you in a pillz lock while you try to squirm your way out of a loss. And remember, her ability can't be used the first round, so good lucky stopping that
Kolos or
Jay.
In her defense, though, she's much greater of a threat than tiny
Spycee.