It’s too bad that darkness and shadow blade are both concentration spells, since they work really well together mechanically and flavorfully.
There’s not really a ton that interacts with shadow blade in particular, especially for Warlocks. Easy answer is to use green-flame/booming blade with it to make up some for not getting Extra Attack. You can also dual wield with it since it’s Light, so you could be a Bladelock with another Light weapon as your Pact Weapon and do that.
It’s too bad that darkness and shadow blade are both concentration spells, since they work really well together mechanically and flavorfully.
There’s not really a ton that interacts with shadow blade in particular, especially for Warlocks. Easy answer is to use green-flame/booming blade with it to make up some for not getting Extra Attack. You can also dual wield with it since it’s Light, so you could be a Bladelock with another Light weapon as your Pact Weapon and do that.