Last call this year on Kershaw. He's still in the top 10 in ERA, despite his "struggles" this year. He is currently working on a streak of 7 consecutive quality starts.
Also potentially available from the Dbacks are Yasiel Puig, Nate Eovaldi, and Anthony DeSclafani.
Kershaw, etc.
Re: Kershaw, etc.
In addition to Kershaw, Hunter Strickland is also available with a 118 ERA+. I'm sure some teams could use him in their relief corps.