[Dragaera] Where did Vlad get the gold phoenix stone?

[Howard Brazee]

On 4/8/2010 9:52 AM, Michael Wojcik wrote:
>
>> Unknown. It appears between Athyra and Orca but it isn't explained
>> how...
>>      
> Vlad does say in the epilogue to _Phoenix_ that he "had rendered
> [himself] invisible to sorcery", which seems to be the first
> reference, if only by implication, to his having the gold stone.
>
>    
So, it's time for a pool - what is the title of the book where he will 
find the gold stone?