Type: General
Source: Dragon #280
Your familiar is a construct rather than a living being.
Benefit: Rather than a living creature, your familiar is a magical construct, a mechanical creature animated by magic. The arcane spellcaster must still specify a specific animal to call as a familiar; the familiar that appears, however, is a construct version of that creature. See page 5 in the Monster Manual for construct special qualities. Note that you cannot convert an existing non-construct familiar to a construct familiar by taking this feat.