Because forget about the meta build, that's why.

Recently, I watched a video from a youtuber/streamer that's named after a certain lethality item where he built Pyke from the support role with full resistance Pyke, and I got inspired to make use of his passives HP->AD conversion while still building useful resistances, AD items that will help it scale into the mid game, and ensuring survivability inside of late game team fights.

Resolve
Grasp of the Undying
Bone Plating
Chrysalis
Anything
Domination
Cheap shot
Eyeball collection or Ravenous Hunter
*Note* Overgrowth does not give bonus AD from the increased max health. It will actually increase your "base" HP.

This depends entirely on the enemy team comp, but there are a few essentials.

Start:
Doran Shield/Doran Blade, Health potion, and Warding Totem.
*Note* Either Doran item is acceptable. Blade only gives an extra 8 ad and some sustain, where shield gives better trading potential with it's passive.

Early:
Bami Cinder, Spectres Cowl, and Tiamat.

Essential:
Spirit's Visage, Sunfire Cape, and Titanic Hydra.
*Note* By the time you get these items you should have around 30 stacks on GOTU.

Offensive items:
Steraks Gage, Frozen Mallet, and Black Cleaver.

Defensive items:
Deadman's Plate, Thornmail, and Gargoyle Stoneplate.
*Note* GSP is the only item that will increase your max hp except for overgrowth exploit.
*Fun Fact* It takes 560 cs to get warmog's heart with overgrowth exploit

Outside of the essential items just do what you want, choose your own order, and prioritize based on the enemy team and the needs of your team.

R Q E W Max.

Q gives more damage and cool down.

W increases duration of stealth and gives more movement speed.

E gives more damage and cool down.

R obviously.

Pros:
You're not a pleb that does what riot tells you
Tanky bruiser that is significant in mid and late game
2 big 'ole health bars /w passive
High skill cap champ and a braindead playstyle
High gank support
Good to stay in the game when behind

Cons:
No spicy one shots
5/10 early game
Can't hard carry a feeding team
difficult to carry a team that's behind
Will make balance and character development teams at riot hate you