Lvl 1:Stats
Lvl 2: Shadow Word
Lvl 3:Shadow Word
Lvl 4: Stats
Lvl 5:Shadow Word
Lvl 6: Rain of Chaos
Lvl 7: Shadow Word
Lvl 8:Stats
Lvl 9:Stats
Lvl 10:Stats
Lvl 11: Rain of Chaos
Lvl 12:Fatal Bonds
Lvl 13: Fatal Bonds
Lvl 14: Fatal Bonds
Lvl 15: Fatal Bonds
Lvl 16: Rain of Chaos
Lvl 17: Stats
Lvl 18: Stats
Lvl 19: Stats
Lvl 20: Stats
Lvl 21: Stats
Lvl 22-25: Upheaval
Items i go:
Boots of Travel, Mekansm, Bracers, Refresher, Necrobook, Eye of
Skadi
This is just my build, and it may not be the best. Normally i ask
for a solo lane, prefably solo mid because warlock is a gay solo
hero.
Can consider radiance if you want battle warlock. 
