It has many similar ways to cause astonishment (5)
I believe the answer is:
amaze
'similar ways to cause astonishment' is the definition.
I can't judge whether this defines the answer.
'it has many' is the wordplay.
I cannot really see how this works, but
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is located in the answer.
'many' could be 'm' (Roman numeral for a thousand) and 'm' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for amaze that I've seen before include "Flabbergast" , "Stupefy" , "Stun" , "Surprise greatly, astonish" , "Greatly surprise in a labyrinth" .)