Your name is like a spell (to me).

There's magic in your name / Your name is (like) magic to me.

vielleicht? Ich kann mir unter dem Deutschen noch nicht 100% etwas vorstellen.

+1 "There's magic in your name".

Or, if you simply must have "spell", then "your name casts a spell (on me)."

Thank you very much for your feedbacks. As I understood from you, you would not apply «there is a spell in your name».

Since it is for a song, rhythmically I might use «there's magic in your name» but I'm not yet 100% happy with it ...

Could I also say «you cast a spell with your name»?

For the rhyme it is important that the word «name» is at the end of the sentence.

Thank you 👍🏼! Well-noted and much appreciated. Happy New Year to everybody! 🍀