fsckd [1] filed a deletion request for xcursor-protozoa [2]:

Package is impossible to maintain in AUR. Upstream put sources on Deviantart and Mediafire which don't have stable source URLs. Users can download directly from upstream and install in their $HOMEs if they really want these xcursors.

[1] https://aur.archlinux.org/account/fsckd/ [2] https://aur.archlinux.org/pkgbase/xcursor-protozoa/