Trollathon #2.10 : The Biography Of A Square

I AM SQUARED => the number is $i$ and became $i^2 = -1$

AND WAS DRAWN BETWEEN TWO ONES => $|-1| = 1$

I WAS MULTIPLED

BY NOTHING ELSE BUT FOUR => $1 \cdot 4 = 4$

SOMEONE CHANGED ME INTO A CUBE

A CUBE THAT'S MY DOUBLE => $4 \cdot 2 = 8$

THEN SOMEONE ADDED A DIMENSION

WHICH MADE ME A SQUARE AGAIN => $8 + 1 = 9 = 3^2$

I WAS ROOTED TO THE GROUND

AND TORTURED BY AN UNKNOWN => $\sqrt{9} = 3$

AN UNKNOWN THAT LOOKS LIKE

WHAT I WAS BEFORE => The unknown is $i$

HE RAISED HIS WAND 4 TIMES => Unknown = $i^4 = 1$

AND INTEGERS STARTED TO STICK TO HIM

INTEGERS THAT WAS LESS THAN ME

BUT NOT NEGATIVE FOUR => Unknown = $1 + 2 + 1 + 0 + -1 + -2 + -3 + -4 = -6$

THEN HE STAND ON TOP ME

AND PUT HIS NEGATIVE SIGN BETWEEN

TOGETHER WE FORM A NEW NUMBER

THE NUMBER THAT YOU SEEK => The number we seek = $\frac{6}{3} = 2$

MAKE SURE YOU SQUARE IT

TO GET THE ANSWER YOU'RE LOOKING FOR! => Answer = $2^2 = \boxed{4}$