Hi, thx a lot for u answer.
The special ability of the Spider states the following:
* Place Tokens Step
Characters may not apply Attrition hits against Spiders.
But I do not understand your answer. The special ability of the spider prevent you can put hits tokens in the attrition box? or you can put the hits tokens in the attrition box but not move them to the box damage?
So, for Blast Wave to be any use you need to apply Attrition hits after "Place Tokens Step". An item like Demon Forged Breastplate applies Attrition in the Damage Step, so you could use Blast Wave in the following combat round. However, would you even fight a Spider if one of your friendly participating characters were able to wear that breastplate? - Probably not.
And i can use Blast Wave only if i place hits token in the attrition box in another step than "place token step"?