You have probably seen the regular cover to Dark Nights Metal #5 (pictured to the left.) But there are also a couple of other covers available, these include the Daniels Variant, and a Lee variant. Andy Kubert provides one as well. It is a pretty sweet cover. Of course it features the grinning face of The Batman Who Laughs, and what looks to be a Demonic Justice League. Check it out below:
Here is the cover art to Dark Night Metal #5 Andy Kubert Variant. It has not been released yet.