Unclutter hides your X mouse cursor when you do not need it, to prevent it from getting in the way. You have only to move the mouse to restore the mouse cursor. Unclutter is very usefull in tiling wm's where you do not need the mouse often.
Unclutter is in [community]:
# pacman -S unclutter
Use your .xinitrc file or WM/DE to start unclutter, for .xinitrc add:
Misbehaviour of the mouse cursor
Unclutter could cause unusual mouse behaviour in some SDL Games. The mouse cursor might be reset to some positions in the screen because of this problem. The details can be found here
There are two known workarounds for this. You can either add "SDL_VIDEO_X11_DGAMOUSE=0" to your environment variables or run unclutter with "-grab" option
unclutter -- Linux App Finder