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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Mythical serpent:

HYDRA: Mythical serpent
PLUMED: How a Mexican mythical serpent is depicted
MAINDRAGON: Head of a group of mythical serpents?
COCKATRICE: Mythical serpent-rooster whose look could kill