Trollathon #2.7 : WPXFMT GUX!

Using the caesar cipher to decrypt the title, we get "VOWELS FTW". Now, let's just focus on the vowels in the text. Denote the vowels by $1$ and consonants by $0$ . Look at the text three letter at the time.

$111$ $111$ $111$ $111$

$011$ $101$ $100$ $011$

$011$ $111$ $111$ $101$

Now, if we just focus on the ones and look at it sideways, we see that the ones traces the word "FOUR"! So, the answer is $\boxed{4}$ .