I've used a killer familiar before. The advantage is based on abusing Share Spells. Any buff you cast, is duplicated on the familiar as long as he stays no more than 5' away from you. Or, if you like, you can cast a personal range spell on your familiar and ignore the distance restriction. Even the least abusable shapeshifting spell (like the fixed polymorph replacements, such as trollform) is a huge bonus on the familiar.roguerouge said:Can you give a thread or an example of these killer familiar builds which you allude to?
You can buff both yourself and your familiar to the gills and basically double your damage output, without burning any extra spell slots. And you can combine unintended spell effects, like antimagic shell on your flying familiar to strip an opponent's magical abilities while you still cast spells at full power. And while it's a bummer to lose a familiar, it's still far preferrable to dying yourself.