I was expecting Sweet Leaf to win this round, but Supernaut is an awesome choice as well!! Best 10-letter Sabbath song?

There are seventeen Black Sabbath songs with 10 letters in their name:

Angry Heart

Back to Eden

Bible Black

Born to Lose

Cornucopia

Danger Zone

Dear Father

Dirty Women

Hand of Doom

It's Alright

Keep It Warm

Methademic

Neverwhere

Odin's Court

The Shining

Stonehenge

Take Me Home