[X] Plan The Great Conqueror
-[X] "So it is glory in war that you seek." *chuckle* "I think I can arrange something. Essos, nay, the world will see war like none before in the coming time. There will be plenty of glory for you to claim by bow and arrakh."
-[X] "Nothing definite I can promise you, but I will adjust my plans to give you the opportunities you seek. Before the year is out, a great victory shall be yours."
-[X] "In the meantime, there are some others matters. I see myself in need of good cavalry, but lack the horses and expertise to make it happen. If you agree, I would send you men to train and bolster your numbers. Likewise supplies, arms and armor forged by magic. Their presence could even help to win over the more stubborn among your host to the notion of wearing armor."
-[X] "And in regards to horses, there is something else. On a market beyond this world, I acquired one of the finest war-horses ever seen by mortal eyes. Smart as a man, strong and swift. Take this horse and stud it. May your warriors ride on steeds greater then any other Dothraki ever had. All I ask in return is some of the get for the riders you train for me and I will not begrudge you if you keep the best of them for your own."
-[X] Also offer him to Bloodwish fertility into some mares, but warn him that the process is untested and might have side-effects. Maybe don't use the best mares immediately and you will pop over and repeat the process once he got some experience with the results.