/usr/lib/x86_64-linux-gnu/librelion-1.4.so is in librelion-dev 1.4+dfsg-3ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/librelion-1.4.so.1.0.4
/usr/lib/x86_64-linux-gnu/librelion-1.4.so.1.0.4