Crest Evolution

Stage 1

The Occult Crest

enhances the magical power. The health restoration on ability use and kills allows you to sustain longer in fights, making you more effective in continuous engagements. The additional damage to minions aids in faster wave clearing, which is crucial for maintaining lane pressure and securing objectives.

Stage 2

The Warlock Crest

is excellent as it significantly boosts your magical power, enhancing your ability damage output. The health restoration feature remains, providing continued sustain, which is critical for staying longer in fights and pushing lanes effectively.

Stage 3

The Obelisk

is a tricky crest. You have to collect the souls in order for it to show effectiveness. But if you time it right and start stacking up the souls, you can push up your damage output quite nicely.

✢ First Core Item ✢

Azure Core

provides you with enough MANA that is necessary for you to be able to cast a lot of abilities in a short period of time. Once the other core items come into play you will definitely need it. Running out of MANA is never good.

✤✤ Second Core Item & Evolution ✤✤

Orb Of Growth & Orb Of Enlightenment

First, you will need enough XP in order to be able to evolve the orb.
Once you have done it you gain with every level additional Power, Health and Mana.

✥✥✥ End Game Core Items ✥✥✥

Spirit Of Amir

On top of your health regeneration through the crest, first and second core items you get in the jungle 6% life steal and out of the jungle your power is increased by 8%. This prevents you from being too squishy and while you clear your wave you get 2% mana regeneration so you don't have to go often back to the base.

Astral Catalyst

This item is kinda crucial for this build because it pushes your three very important stats up. Power, Max Mana and Ability Haste, but most importantly it reduces your ultimate cooldown by 20.

Time Warp

Like Astral Catalyst you get a big Power and Ability Haste boost, but you also get mana regeneration that is passive and just like your ult you get a cooldown reduction for your normal abilities.

Conclusion

With this constellation of items you get a really nice boost in your health and mana. Cooldowns are pretty low, so you can almost constantly switch between abilities. You can stay longer on the lane and farm faster.

Of course for this build to develop its full power everything depends on your timing and skill.

Review

If you have tested it, please let me know with a like or dislike. :)
I will be testing this build regularly and changing it based on Pred. Updates.