I failed to get a screen shot sorry.
I was playing top50 vs gab### or whatever his name is (most likely a hacker considering a sudden appearance in the game with a 500K+ score)
I played wings and Gab stole my wings. He immediately played a bonewall after stealing but when he did so only 1 bonewall appeared, not 7. I confirmed it was only 1 when on my turn only the first creature was blocked. I had 3 creatures out and was using a healbow deck. I might have had a graboid, frog and crawler, dont really remember though.
Was unable to recreate on a simple first try but if anyone wants to try be my guest.
Short: Steal wings, play bonewall, only get 1, not 7.