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Before facing the dragon 's fires , Merlin must confront several others : the dreaded kreelixes , who live to devour magic ; the mysterious Wheel of Wye ; the sorceress Domnu , who holds the treasured Galator ; and perhaps most importantly and most challenging , those fires within himself .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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