Spoiler:
Benefit: The alchemist creates a Diminutive or Tiny tumor on his body, usually on his back or stomach. As a standard action, the alchemist can have the tumor detach itself from his body as a separate creature vaguely resembling a kind of animal suitable for a familiar (bat, cat, and so on) and move about as if it were an independent creature. The tumor can reattach itself to the alchemist as a standard action. The tumor has all the abilities of the animal it resembles (for example, a batlike tumor can fly) and familiar abilities based on the alchemist’s caster level (though some familiar abilities may be useless to an alchemist). The tumor acts as the alchemist’s familiar whether attached or separated (providing a skill bonus, the Alertness feat, and so on). When attached to the alchemist, the tumor has fast healing 5. An alchemist’s extracts and mutagens are considered spells for the purposes of familiar abilities like share spells and deliver touch spells. If a tumor familiar is lost or dies, it can be replaced 1 week later through a specialized procedure that costs 200 gp per alchemist level. The ritual takes 8 hours to complete.
Swap Places
Spoiler:
Benefit: Whenever you are adjacent to an ally who also has this feat, you can move into your ally’s square as part of normal movement. At the same time, your ally moves into your previous space as an immediate action. Both you and your ally must be willing and able to move to take advantage of this feat. Your ally must be the same size as you to utilize this feat. Your ally does not provoke an attack of opportunity from this movement, but you provoke as normal. This movement does not count against your ally’s movement on his next turn.
Lets say you are a Halfling and get the Improved Swap Places which allows for you to swap places with your ally if you are one size different. Also lets say you have a way to give your Familiar a Teamwork Feat like Swap Places such as via the Eldritch Guardian's ability to share Combat Feats. And let say you have a Tumor Familiar from having some levels of Aberrant Bloodline Bloodrager and the Aberrant Tumor Feat. That you use this feat. While attached.
Cmon. Imagine it. What happens there? Do you become your Familiar's Tumor?!
Bwahahahahah!!!
... a sick part of me wants to do this now.
If you're attached, nothing happens. You're already in the same square.
...its a joke. Laugh.