I still think it should only give a % chance to reflect, or maybe a limited duration would work. I'm worried this could make bonewall a little too OP. But maybe im just overreacting.
That aside, given the addition of SoW and Psion, this will be quite a handy card. (may even have some offensive potential if you play
and pack a couple shards of wisdom)
As it is now, the cost is probably ok. Maybe slightly on the high side. If it is made to give a % reflect or limited duration, it should probably be much lower.