Abilities:

crescent strike
◕ you would use crescent strike as a ‘mobility’ ability around half the time,
[Q on minion, R to minion, R to main target],
so i believe it's not a good idea to max it out, especially since this is a hybrid build that does not stack AP.
◕ learn to walk a bit to the left side when chasing an enemy. do not walk straight behind him. this should help your Q to land better.

Pale Cascade
◕ makes up most of your casual "burst" damage,
it is very beneficial to max your W first,
laning and trading gets easier,
clearing raptors, krug, wolves, scuttle and gromp gets easier,
◕ each 'sphere's explosion radius is NOT around the orb itself, it's around you.
you can use Pale Cascade WHILE channeling your ultimate. use this tip to apply maximum burst pressure on main target.
◕ if you cast Pale Cascade BEFORE ultimate, some spheres may come in contact with minions and explode while channeling ultimate, hence wasted. it is recommended to cast it right before landing.
◕ is accepted by shield bash rune.

Moonfall
◕ your SUCC ability. save it for when enemy attempts to run away,
use it to collect multiple minions and monsters so your passive and W hits all of them,
or use it after depleting crescent strike, Pale Cascade and two Lunar Rush to keep up the passive attack speed.
◕ when you're being chased by a melee enemy, cast Moonfall if they're i range, this will NOT kill you. the lingering slow effect will save you.

Lunar Rush
◕ you can use Lunar Rush as soon as you've finished casting crescent strike (if you're sure it's gonna hit) and it will reset Lunar Rush even if crescent strike lands AFTER your Lunar Rush.
◕ [for lower latency] you can use crescent strike instantly AFTER casting Lunar Rush and it will still reset your Lunar Rush.
◕ you can use moonlit enemies as proxies to reach main target.
◕ you can also use Lunar Rush to be a mosquito like irelia is. Lunar Rush in, Lunar Rush out.

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here's the item set code for the builds:

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