When you start the game you will be looking to farm up and get as much gold as possible. Make sure you take rift herald early game. The extra gold from turret plates will help you get ahead in your build early. You play the early game out very similar to how you would play meta build. Make sure you buy a dark seal on your first back so you can upgrade it into a Mejais soul stealer for the bulk of your AP later. It is pretty easy to stack because you can move pretty fast in and out of fights and take a lot of shots as well because you get the super tanky late game.

One problem with the normal lillia build is the fact that she is a squishy champion who relies on getting in close proximity with enemies to do damage. This is the reason that lillia starts to fall off in the super late game. Any ranged champion will be able to do tons of damage to you from very far away without you even getting a chance to get close. Or in teamfights what are you going to do once their champs do enough damage to quickly send you to the gray screen before you even had the chance to stack conquror or prance stacks. Because of these reasons most of the time the smart thing to do is just sit back and throw out your e or hit the occasional q in fights. With hypercarry champions being the meta right now less people are playing tanks. Meaning you, the squishy kiting champion will lots of games be as close to a frontline as your team will get. What good is 5 combat items and boots if you die to quickly to use them? But with this build you can really get into the middle of fights without the threat of being oneshotted. It allows for safe scaling and teamfight potential that the meta builds just do not have. Because of this reason I usually end up doing more damage with this build then I do building strict damage builds.

Once you build Demonic Embrace you usually want to go for Ionian boots. But if their team has a lot of CC and AP you might want to go for Merc Treads. If their team has a lot of AD you might want to go for Plated Steelcaps. Once you have your boots you want to start building your Frostfire gauntlet. Once you complete frostfire, the amount of durability you have from the item is actually kind of desgusting. It is also a cheap item, and ontop of that it works with demonic embrace very well. This is because frostfire gives you lots of bonus hp while demonic embrace converts a portion of it into ap. So from building frostfire you are pretty much getting ap from the item as well. After this I like to get as much ap as possible to keep up my damage. So next item you want to upgrade your dark seal into Mejais Soulstealer. When you upgrade to Mejais, because it is a legendary item, you will get some health and champion size from your Frostfire gauntlet passive for very cheap. As well as being able to snowball out of control if you can get some kills/assists. After that you build Rabadons Deathcap to increase your AP even further. Mejais Soulstealer + Rabadons Deathcap is my favorite item combo. Just by using those two items, you will get a lot of AP. Your next item is Warmogs for more health and regeneration to make you harder to kill. and make it easier to stack mejais soulstealer. I often find that when I dont have warmogs yet I have trouble regenerating lost hp after big fights. Warmogs completely fixes this problem. Once you have those items your core build is complete. You will have a lot of AP and a lot of health and resistances. If you are not having a great game and cant seem to stack your mejais soulstealer you can sell it to buy one of the item options I listed in my build. They are all good and you usually want to build the one that best fits your situation in-game. In the notes section of the sell mejais items I listed out the benefits of each item in that section.