incantatory

/ɪnˈkæntəˌtɔri/
adjective
  1. Having the character or effect of an incantation; spoken in a rhythmic, magical, or hypnotic way.
    • His speech had an incantatory power that swayed the crowd.
    • The drumbeat accompanied an incantatory chant in the ritual.
    • The singer's incantatory voice made the audience feel spellbound.
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