<https://dnd-wiki.org/wiki/Balanced_Metamagic_(3.5e_Variant_Rule)>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://dnd-wiki.org/w/index.php?title=Balanced_Metamagic_(3.5e_Variant_Rule)&action=edit&section=6>