A "bit" of Voldemort

[pippin_999]

No: HPFGUIDX 170373

Bart:
> A horcrux spell has been described as being quite complex (far  more 
> complex than an AK spell, which seems to require the word and the  intent 
> more than fine wand movements and precise pronunciation).

Pippin:
 I don't see that the horcrux spell is described as
being complex. 

Did I miss something? Or is this fanon?

The spell is certainly regarded as evil and is kept highly secret, but
that doesn't mean it's hard to do. The secrecy rather implies that it
isn't, since otherwise the difficulty itself would protect it. The
technique might be hard to discover but relatively easy to perform,
or it might be hard to master but again easy to do, like the animagus
transformation, which Sirius could manage even in Azkaban.

Pippin
thinking that if there are three of Voldemort's secrets protected
by Secret Keeper, the third might be the horcrux spell, in
which case, if Voldemort dies, the secret of their making will
be safe indeed.