This Who am I? Is a little more in depth, with a few puzzles to solve to get to the final answer. First let's start off with a short story riddle. From the story you should get two answers. One is 5 letters, the other 6.
An old man wanted to leave all of his money to one of his three sons, but he didn't know which one he should give it to. He gave each of them a few coins and said buy something that would fill their living room. The first son bought straw, but there was not enough to fill the room. The second son bought some sticks, but they still did not fill the room. The third son bought two things that filled the room, so he obtained his father's fortune.
What did he buy?
As you may notice, the answers you got from the story are inside here. Now if you look at those two specifically, and you figure out what's important about them together, you'll find two possible keys. The one you care about is the one that is not this puzzle.
And now for a puzzle type I have started to learn, albeit not on this scale. There is something important you will want from this one too. (No the weird 13 is not important, it's just a editing mishap I promise).
Now, if you have everything you need this part should be a piece of cake.
Text: Kt lhu tbsb kb gae ovzvp rvkekgmfp mbn wqyp wkbq fe
And with that I ask, who am I?