The Wizard channels their spells through the eyes of an arcane homunculus.
Single use. The owner of a Focus Familiar may use it when they attempt to cast a spell. Place a marker (such as a Familiar model) completely within 12" of the owner. The range and all effects of the spell are measured from this marker, rather than from the owner. If the spell requires a line of sight, this is determined from the marker (which has a 360° vision arc).