I need to know if Shardminds can be affected by any form of petrifaction in 4E D&D. Does it not work because they're already made of crystals? Does it work by changing them into regular stone? Or, does it not work because it turns them into regular stone which their consciousness then animates?
I believe that rules-wise they could be affected because they don't have a written immunity to it, but I want to know what logic would dictate, to placate an adamant Shardmind PC.