Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
When skilling always take transfusion when you can. leveling it up will make it do more damage, reduce the cool down, and also keep you alive!!
Sanguine pool should be used as a escape or it should be used right after Hemoplague for a bump in damage when you wanna kill that other guy.
Tides of blood is a great skill but not really needed early game because of its hit point cost.
when you are in the mid lane stay back near tower until you got 4 points into transfusion. (in some cases it might work to only put points into Q and W and just skip E till later game.)
Also as for Leviathan you can get it if you want or if you need or want to put out more damage you could just get another zhonya's ring for a ap boost. (DO FORGET HIS PASSIVE BENEFITS FROM AP AND HP)
As for summoner skills if you don't wanna use the ones i have other i think are also good are ignite, flash (for nuke), and heal is ok for early game but not really late.
Please tell me you experiences with your builds and mine and please on +1/-1 if u comment on why so i can try and improve the build.
Thank you and enjoy!