It alone strangely gives ecstasy (7)
I believe the answer is:
elation
'ecstasy' is the definition.
(I've seen this before)
'it alone strangely' is the wordplay.
'strangely' is an anagram indicator.
'it'+'alone'='italone'
'italone' with letters rearranged gives 'ELATION'.
'gives' is the link.
(Other definitions for elation that I've seen before include "It's a great feeling!" , "'High spirits, exhilaration (7)'" , "State of pleasure about toe-nail" , "Transport" , "State of being delighted or proud" .)