#changing types

No.

A permanent that changes types isn’t a new object and isn’t entering the battlefield since it was already on the battlefield. When Sarkhan becomes a dragon, he’s still the same permanent represented by the same card and Lathliss takes no notice of him.

From my studies you don’t change type throughout your life. You can change in your results, but that is caused by not knowing yourself, conforming to outside factors (like a new job, people’s expectations, a marriage, etc). I tested as ENFP and ENTJ growing up but that was me conforming to ideas of myself. But I was an ENTP the whole time. It is about finding that true type. I don’t believe you have actually been 5 different types throughout your very short life so far. The amount of different types as your results indicate a strong uncertainty in your sense of self for whatever reason. The “wanted to be a Thinker” indicates that you probably are thinking to much of the self you want to be and aren’t focusing on the self that you are. Which could be a Thinker, but you must of a clear sense of self and not an imagined self in order to find your true type.

Well, I think there are two different questions here.  

Can an alto become a soprano or a mezzo?  My answer would generally be no.  We have physically restrictions on our voices that limit these kinds of things.  I think there’s a common misconception amongst singers that says that sopranos are somehow “more trained,” and that “more training” will make you a soprano.  That singing higher is equivalent to sound technique.  That’s just not the case. Our bodies are vessels of reverberation, our head shape, mouth shape, jaw shape, chests, stomachs, these are all things that dictate what kinds of voices we have.  And then on top of that, there’s thickness of vocal chords.  These are different across all people, and cannot be changed by practice.  We are limited in what our body gives us, and not all of us can sing high, and not all of us can sing low.  I actually know a soprano who cannot sing below a middle C, which is incredibly detrimental—how many roles do you know that never go below a middle C?  Not many.   So it really goes both ways.

A wider range?  Absolutely possible.  With training, I gained about a fifth lower in my range, and while I probably didn’t gain any new notes in my top range, I strengthened them to where they were usable in performance, not just “I can squeak out this note….but it sounds terrible….”  Working on your lower range will help to strengthen your upper range, as they are all connected.  A lot of widening your range has to do with letting go of tension in your throat that is inhibiting your range.  Feeling like a note must be too high or low to reach often makes it so, even if the obstacle is only psychological.  That is, sometimes our minds are what stops us.  And that may sound silly, but our brains are far more powerful than we could ever imagine when it comes to singing.  Apprehension like this can literally keep you from being able to sing notes that you should otherwise be able to sing.