A work named for this deity was written on wooden planks and uncovered by a White Russian lieutenant in a looted Ukrainian mansion. For 10 points each:
[10m] Name this Slavic god of the underworld who opposes the thunder god Perun. This deity also names a 20th-century forged text that describes a legendary Slavic migration through Syria.
ANSWER: Veles [accept the Book of Veles]
[10e] In spite of its forged status, the book of Veles is seen as scripture by some followers of Rodnovery, a Slavic religion of this type. Other faiths classified under this designation include Hellenism and Wicca.
ANSWER: neopagan [or modern paganism or contemporary paganism; prompt on pagan; prompt on NRM or new religious movements]
[10h] Some Rodnovery faithful use the Book of Veles to formalize this concept, which consists of Prav, Yav, and Nav. The panther, condor, and snake symbolize the Incan pachas that make up this concept, which is represented by a Dikenga cross in Kongo religion.
ANSWER: the cosmos [or the universe or the world; accept answers mentioning the heavens or the sky, the earth, and the underworld together; accept cosmogram]
<KT, Mythology>