Corrupts (5)
(Another definition for warps that I've seen is " Becomes distorted".)
'corrupts' is the definition.
('taint' can be a synonym of 'corrupt')
This is all the clue.
(Other definitions for taints that I've seen before include "Contaminates" , "Flaws in titans" , "Traces of bad quality in titans" , "Traces of decay in Titans" , "Pollutes" .)