Arcane Familliar

 You have earned a favour of arcane being. For as long you retain it's favour, you gain following benefits:

• You learn Find Familiar. It doesn't count towards spells known. If you already know this spell, you can choose a different spell from your class spell list.
• Your familiar can take on additional forms. Willingness to take on a form is determined by the familiars personality and relationship with its master. Familiar can only take on form of a tiny or small of up to CR 1. 
• Your familiar retains his Intelligence, Wisdom and Charisma regardless of form. 
• Your familiar can defy your orders and act independently based on its personality. 

Familiars actions, personality and  willingness to obey the owners commands are determined by the DM.