Syntax: sacrifice <object>
SACRIFICE works on objects on the ground or in your inventory. If the
object is on the ground, it is removed from the game. If the object is
in your inventory, SACRIFICE offers it to your god, sending it to them
if they are online, and have room in their inventory. If they are offline,
or have no room, it is removed from the game. Your god may reward you
for the sacrifice. The nature of the reward depends upon the type of object.