HP4GU Contest #16 -- Last Chance!

[Joywitch M. Curmudgeon]

No: HPFGUIDX 27859

This week's contest is still open.  Submit your entry by email to 
HP4GUCon at aol.com or to the address above.  Entries will be accepted 
until I check my email Friday morning (usually around 11am EST).  
Here's the contest:

Among Dumbledore's accomplishments, according to his Chocolate Frogs 
card, is that he discovered the Twelve Uses of Dragon's Blood.  
According to an interview with whatshisname who wrote the movie 
screenplay, one of those 12 uses is Oven Cleaner.  Some of the other 
12 are, undoubtedly, ingredients for various potions.  What do you 
think?  Come up with one, two, three, or all twelve uses of dragon's 
blood, along with an explanation, if you like. (Feel free to ignore 
the oven cleaner possibility since it is not canon.)  I will, as 
usual, start things off with a smartass (yet timely) suggestion:

One of the 12 uses of dragon's blood is an antidote to anthrax 
poisoning.  (Because wizards have been dealing with Voldy for so 
long, they are a lot better prepared than us muggles at dealing with 
terrorism.)

--Joywitch