How to receive a visionary dream according to pagan sources
The video specifically looks at an irish rite known as Imbas forosnai performed by elite seer poets known as Filíd, also the tairbfheis, a rite to determine the High king at the Hill of Tara. In Wales there were the awenyddion and in Scotland they had a pagan rite of prophecy called Taghairm. I also look at several Anglo-Saxon and Norse Icelandic saga sources discussing Ulfhednar, Hammramr, Elves, haunted barrows and seers and compare them with the dreams described by Homer and Pausanias in Ancient Greece.
Chadwick, N., ‘Dreams in Early European Literature’, in: Carney, James, and David Greene (eds), Celtic studies: essays in memory of Angus Matheson 1912–1962, London: Routledge, 1968. 33–50.
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Ramos, Eduardo, ‘The Dreams of a Bear: Animal Traditions in the Old Norse-Icelandic Context’ (2014) https://www.academia.edu/8461445/The_Dreams_of_a_Bear_Animal_Traditions_in_the_Old_Norse-Icelandic_Context
Tendulkar, S. and Dwivedi, R., “Swapna’ in the Indian classics: Mythology or science?” (2010) https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3215360/
Vaschide and H. Piéron, ‘PROPHETIC DREAMS IN GREEK AND ROMAN ANTIQUITY’ (Oxford : 1901) https://archive.org/stream/jstor-27899218/27899218_djvu.txt
The Wooing of Emer by Cú Chulainn (Author: [unknown]), p.303 (paragraph 78.) https://celt.ucc.ie/published/T301021/note038.html