Once per adventure you may switch places with your familiar.
You may do this even on your death count if you wish.
Your spirit flung deep into the plane whilst theirs takes over your body.
For the rest of the encounter you roleplay as your familiar. There personality is up to you to define but should in some way be shaped by their plane.
They have the same stats as you, but you regain your hits, per-encounter abilities and resources as though this was the start of a new encounter.
In addition, any spells which would cause you to “ready a ward” or “ready a curse” that you have purchased are automatically and instantly cast on you at this time (Vision of Ending, Death Curse, Speed the Sands of Time, Death's Shadow).
At the end of the encounter, you switch places again.