Last inscription consisting primarily of magical symbols (5)

I believe the answer is:

runic

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'magical symbols' is the definition.
'runic' can be an answer for 'symbols' (I have seen 'mysterious symbols' mean 'runic' so perhaps 'symbols' could also mean 'runic'). I'm not certain of the 'magical' bit.

'last inscription consisting primarily' is the wordplay.
'last' becomes 'run' (running is a kind of lasting).
'primarily' indicates taking the first letters.
The first letters of 'inscription consisting' is 'ic'.
'run'+'ic'='RUNIC'

'of' is the link.

Can you help me to learn more?

(Other definitions for runic that I've seen before include "Of magical signs" , "Like mysterious characters" , "Like old Scandinavian writing" , "Of old magic symbols" , "Relating to an ancient Scandinavian alphabet" .)

I've seen this clue in The Daily Express.

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