thank you very much for your comment Jamie. I apologize for the error in the runes, this is actually my first build on Mobafire and I am still getting used to how some things work. I fixed that and also changed the mastery I assume you were referring to (the ignite). That was a habit from the past when I played Kassadin a lot. I got in the habit of selecting that whenever I was taking ignite for a spell, However the magic damage caused my Jarvan's Demacian Standard has a .8 ap ratio so it wasn't entirely unhelpful. I have thought about The Bloodthirster before but I usually shy away from items that require kills just because you never know what might happen and that can lead to a long death streak if you get killed and suddenly don't have nearly the same damage. I also like ghost but teleport gives you some map crossing capabilities that could mean the difference between saving a tower or watching it die. Ghost is definitely viable but with Frozen Mallet it shouldn't be necessary.

What I really like about your build is how you show what items to take against what enemy setups. Instead of just having 5 items to choose from you give people a lot of options which is awesome! Have you ever tried stacking Bloodthirster? I can tell you one thing.. It's mad.

I sadly won't give you a thumbs up because your runes (you can only have 9 marks/seals/glyphs and 3 quints..) and masteries are completely messed up. Why are you speccing for additional AP? None of Jarvan's spells scale with AP thus it's a completely wasted stat where some CDR would benifit you a lot more.

Also! Ghost > Teleport imo :x

Feel free to ask any questions and please vote