8 Turns seems excessive, even considering that all 4 characters can have Blessed memorized. Enemies can use curse 1-2 times per turn.
I think 2 AP and 5 turns would probably be sufficient, if not overkill, given how enemies can spam cursed surfaces cost-free. Bless doesn't convert surfaces to Blessed ones, it just removes curse, so it takes two casts to transform a cursed surface to a blessed one.
But maybe I'm wrong. With no source point costs, players could actually do what enemies do now and prepare Blessed surfaces before they get cursed. That's just simply not worthwhile doing right now with the source point cost. Maybe if that becomes a reasonable option, we'll once again see pre-emptive Bless come into play.
