Finnish has 16, Estonian 14. Though most inflections can be derived via suffixes from about 4 of them (3 singular, 1 plural), What's probably complicated is when to use the correct form.
01. XFTXR 02. I Crave For You 03. Lion Serpent Sun 04. Sól Ek Sá 05. In the Colours Of Night 06. The Substance Of Simplicity 07. Raven Chant 08. She With Whom Compar'd The Alpes Are Vallies 09. Vargold 10. Wintry Mantle 11. Nighttime, Nightrhyme 12. PQFNT