This spell must be cast by a caster who is invested in a Ward or Wizard Lock. While in- side that Ward or Wizard Lock, the caster may use this spell to invest others into the Ward or Wizard Lock. Any who are inside when the spell is cast are invested and may enter and leave at will or recognize others into the Ward or Wiz- ard Lock. In no event will this spell last longer than the Ward or Wizard Lock to which the person is invested. If a Ward is created on Day 1 and a Lesser Investment is cast on Day 4, both will expire on Day 5.