Bladestorm +

[JLander]

How to get a second copy of Bladestorm ?

[Juicy Beefcake]

crafting

You have to get the legendary crafting items from mission rewards. I only saw 2 or 3 though I didn't do a whole lot of grinding.

[epworth]

It is possible for it to drop in legendary coils as well iv had it happen but its rare. Legendary missions start to pop up alot late game so its not to difficult to get in act 3.

[solthusx]

Pretty sure its linked to character levels. Missions with legendary rewards started popping up for me as early as Act 2 once I had a few level 25 characters.

[wendigo211]

Yeah I think it's character level. As mentioned you can get them from legendary coils or craft them from legendary blueprints. However the bonus is: draw a card for each KO, which I find kind of mediocre. It's not too bad if you can mod it to add vulnerable or marked, but I prefer the big hitters like Patience or Annihilation. If you want an AoE to apply debuffs, Holy Burst is another option, and 1/2 the price in Heroism.

[exzazxe]

i got the bladestorm from coils a couple of times maybe a few over about 8 or 9 games , but you can just craft it.
Wendigo is right about how useful the upgrade is, usually i find drawing cards quite smooth without it, you can play it cheap with inspiration which is free, i like inspiration with draw last attack and then you play blade for 0 then you dont need to try and take out loads of perps maybe just 2 or 3 with 'marked', Then use the quick attack you pulled on the injured marked.
Having said that i have a great deal of fun using magic's gather, followed by bladstorm or holy blast. I actually prefer holy blast with 'recover health' mod but only if making an area attack hunter.