Items
-Only buy Lord Dominik's Regards if they have a lot of tanks. Blade of the Ruined King is also very effective against tanks (so Lord Dominik's Regards is kinda useless if they have only 1 tank).
-I recommend Phantom Dancer instead of another attack speed + crit item because Phantom Dancer gives more movement speed while in combat (you need that in late game after you sold boots) and their carry will probably deal less damage to you in team fights so you wont get one shot in team fights.

Late game
-Sell boots, once you are in a fight phantom dancer will provide enough movement speed.
-Sell Ghostblade, the active is better in the early game.
-Frozen Mallet is something I prefer. Try it and if you dont like it go for Lord Dominik's Regards instead.

Why no...
-Essence Reaver?
1.The early game is probably over after you bought your 4 main items and after the early game your mana problems will be over.
2.Essence reaver gives 30% cooldown (if you have enough crit) but Ghostblade and Black Cleaver also give 30% together. So if u buy Essence Reaver you will only use 10% of the cooldown(because the max is 40%) and that makes it not worth buying.
-Guardian Angel?
1.I feel like its a weak item (only +40 damage and +30 armor). Better use your item slot for something else.
2.You wont die with this guide so useless passive.
-Ionian Boots?
1.You need the 35% attack speed from Berserker's more
2.You allready have 30% cooldown from item + 10% from blue= 40%
-Mercurial Scimitar?
1.If you want to buy iy, you should do it in the early game because and the early items in this guide are more important.
2.You don't need qss, you can dodge everything (you have a dash)

Ability's
-Start with your dash because the cooldown will be less everytime you use your passive. This way it will be up again after you used your other ability's (q,w).
-Use your passive for every ability, your combo is probably: e,auto,w,auto,q,auto,e,auto,kill.

1v1
-Try to start the fight if the enemy champion uses an avoidable ability towards you. Dodge this ability by agressive dash toward them, this way you start the fight with your passive up and the enemy has 1 ability on cooldown.

In lane
-Before level 3, try to avoid fights you are not very strong yet.
-After level 3, start making some good trades with the enemy adc (ask for a supp with a heal to heal your wounds) and once the enemy adc is low go all in with ur spells and get first blood.

Team fight
-stay a behind your teammates. Your ult has a pretty large range so can be casted on a distance. After you used your ult and everyone is low, dash in and clean up.

-Steal the blue from your midlaner, this way you can spam ur ability's and it gives the last 10% cooldown for max cooldown (if you bought the main items).
-Sorry for my bad English, it's my second language.
-If you have any questions or if you like or dislike this guide, please let me know.
-Good luck with your lucian pentaaas!