The second to last song on Heaven and Hell is the first on the album that I could do without. That's not to say it's a bad song; it's just not as remarkable as the songs before it. If it didn't have some interesting stuff going on I'd call it filler.
"Die Young" brings quite a few new things to the table. It opens with an eerie keyboard part that reminded me of something that you might hear in a late 1970's horror movie. Iommi adds some melodic guitar parts before the band joins in to pick up the pace.
The second side of Heaven and Hell kicks off with the driving "Wishing Well". Like "Lady Evil" from side one the band is in hard rock territory here.
"Lady Evil" is another brand new track for me. It took a few listens for me to really get into it, but after that I was happy to be taken on a sonic journey to "Witch's Valley". 
Heading into "Children of the Sea" I didn't recall ever really listening to it before. I always linked it to the Master of Reality track "Children of the Grave" based on the similar name. After listening I felt silly as the two songs couldn't be any more dissimilar.
