6500 dilithium guarantee legendary confuse ?

Need Good Legends

How does 6500 dilithium guarantee legendary pack works? Do you pick the event feature legendary? How many packs do you also get?

Dralix

The 6500 dilithium pack is a single 10x pull, just like the 650. It drops only crew, no schematics. You're guaranteed one of the 5* featured crew, which may be a behold (I suppose) but is not guaranteed to be one. All other crew are 4* or better.