Hi Guys This is My first Build So Constructive Critc would apriciated :)
But Anyways Small Explain would be an order to enlight my item chooses and mastery build for Renektor build!

Build:
My Mastery Build is maybe most common melee hero mastery set in this site. with some of my own flavors. first of all criple neat way escape ganks or just plainly annoy melee heroes :) cooldown reduction for skills always big plus ! alacrity 3/4 because i dont wanna choose archain knowledge its just silly mastery to haw on melee heroes full armorpenetration for more hurtful smaks to face Brute force, Lethality, Havoc should be must choises for melee heroes.

Items:
ill start with dorans blade and 1 healt potion after that ill go for Boots Of Swiftnes for maximal movability for haras and escape after that ill start to save some cash for starks Fervor it gives more attack speed and lifesteal good for survivival and 4 fourth item is mandreds bloodrazor for dmg attack speed and some exrta dmg. rest of the items are under pondering because i hawen managed to get so far that i would haw been time to consider 5 item or 6 because game is almoust over usually when i get 4 item so feel free to suggest more itesm to build. Ps: Blood thirster black cleaver and Frozen mallet are my idea to fulfil last items.

skill order:
this may sound silly but i haw found best to start with slice and dice just for pleasure of harassing and escaping if needed lvl 2 ill go for cull of meek for farming purposes after tehn ill start to max out both skills thou at lvl 5 ill take 1 point to ruthles predator to smack some faces at lvl 6 1 point ot ulti ofc at these skills you are able to start some gankin manouvers :)

summoner spells:
-flash all the way good chase or escape mechanism plus it goes wll with slice and dice
-healt because our croco is bit scuishy :)
-Ghost viable replacer to healt

Summasummarun:
this is my first build its still under construction and i will make it more clearer to to read soon as i haw some spare time mean time feel free to advice and suggest improvements to this build.