Because you need a soul for that.
She needed some better grip on her broomstick.
In the beginning, you only need two hearts and a diamond. Later on, a club and a spade.
The girl in church has hope in her soul
ME: Soul crushing and void of meaning W: I meant your meal M: Soul crushing, void of meaning, and needs salt
He whipped out his wand and yelled, "***Shtupify***!".
One had a horcrux, the other had a whorecrush..