Predictable Stab (got the name wrong in the title) is an interesting risk/reward card, but when trogs use it against you in the first dungeon it's really annoying, because even if by some chance you have a block in hand, it's probably either weak block (which can't hit 5-power cards) or unreliable block (and good luck rolling a six). I think this card would be more interesting to play against when you are just starting out if it did 4 damage, or if weak block could block 5 damage (maybe on 4+), because then it might actually trigger sometimes, and new players could start to understand all the interesting ways different cards can interact.