Question Of Immortality - Tumblr Posts

So, we all know that shapeshifting is the best superpower out there, especially if there's no limits on what you can change about yourself or what you can change into.

Theoretically, would this power make someone immortal?

Hypothetically speaking, if I were to become a Shape Changer or a Shape Shifter or a Changeling or something, would I then become immortal? Or would I have to get the power of a Time Master as well?