That pesky wand-core thing SPOILERS!!!

[Phyllis]

Spoilers Spoilers Spoilers Spoilers Spoilers


David wrote:

<<Is it just me forgetting/misunderstanding canon, or was the constant
laser show between LV & Harry's wands nonsensical? ... Or is is not the
laser show that is caused by the twin wands, but the priori incantatem
(which, I freely admit, did not happen in the film)?>>

Phyllis:

IMO, the laser show is nonsensical.  At the point of Harry and Voldy's
final confrontation, Harry has Draco's wand and Voldy has the Elder
Wand.  So there are no common wand cores (since neither have their
original wands with Fawkes phoenix-feather cores) and therefore no
priori incantatem (which results from wands with common wand cores being
forced to do battle against one another).

Since we don't hear the spells that they are casting, apparently we're
supposed to be able to determine that the fact that Voldy's jet is green
means that he's casting an avada kedavra curse while the fact that
Harry's jet is red means he's casting expelliarmus.  However, this
doesn't work for me.  Also, how canVoldy's curse only rebound on him
after Neville kills Nagini even though both green and red light jets
have been locked together for what seems like endless hours?  IMO, it
would have worked much better to have only one set of spells cast at the
very end, as in the book.

~Phyllis