Aranasi Broodmother revealing card after being transformed

The issue is known. It is included in the known issues list, in the April 9th update.

The text in the known issues list focuses on bombs, but it actually affects all “reveal on draw” cards. They continue to have the “reveal on draw” property after being transformed by Rafaam. (Or, probably, any deck-transforming effect).

It is definitely not intended, and I hope it’ll be fixed soon.