<http://schema.org/description>
"Sacrifice your demon to gain Demonic Power, causing your spells to sometimes also deal (100% of Spell power) Shadow damage to the target and other enemies within 8 yds. Lasts 1 hour or until you summon a demon."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.wowhead.com/spell=108503>