What are some satanic bands?

Mayhem, Gorgoroth, Deicide, Trelldom, Taake, Carpathian Forest, Marduk, Merrimack, Dimmu Borgir, Behemoth, Watain, Skeletonwitch, Lightning Swords of Death, Leviathan, Ghost, Electric Wizard, Burzum, Dark Funeral, and Darkthrone.

However, those are just bands with direct Satanic References. There are many more bands who are just anti-Christian or anti-religion in mindset and lyrical themes. These include the above as well as:

Opeth, Rotting Christ, Immolation, Suffocation, Dying Fetus, Agalloch, Enslaved, Anaal Nathrakh, Anata, Atheist, Slayer, Blood Red Throne, and Bloodbath.

Of course these are just a few. There are much more bands I have not mentioned.