Replace 'graveyard to library' with 'When SN is put into a graveyard from anywhere, shuffle it into its owner's library'
Replace 'library instead of graveyard' with 'If SN would be put into a graveyard from anywhere, reveal SN and shuffle it into its owner's library instead'
Replace 'dead recover graveyard' and 'opponent discard onto battlefield' with card text syntax
sacrifice unless must begin with 'you may' to be optional
revert card scripts to use "you may" for sacrifice unless
ability prefix missing ending full stop
ability prefix missing ending full stop