Complex sentence: I'm Amy's imaginary friend, but I came anyway! and joins the wedding festivities and afterwards, he returns River's diary and the vortex manipulator to her so she can return to her own time.
Split into simpler sentences: I'm Amy's imaginary friend, but I came anyway! and joins the wedding festivities. Afterwards, he returns River's diary and the vortex manipulator to her so she can return to her own time.