why do you get tank items you don't need them thanks to his E

Not only is that subjective, it is also wrong. Event Horizon, Pick A Card, Bandage Toss, Aqua Prison, and Scatter the Weak are all better. They are all either AOE, have longer durations, or both. Well, aside from Bandage Toss, but it's a strong gapcloser as well. You could argue that Cryptic Gaze is better because it is targeted, but you'd still be wrong.

First game ever as sion with this guide = 8/2/10
Awesome build and guide dote, +1 from me :)

Yeah, there is a big variability in it. You most of the time have to pick the route which fits your team, your earlygame playstyle and the enemy jungler. Sion can start at both red and blue, but starting at blue would be generally better as it is faster and he needs the mana and CDR for his shield, while he needs the slow of red buff for ganks. So your route is perfectly fine.

The idea behind my route is that you have nearly enough gold to already buy Mobility Boots, because that is a key item to his jungle strength. After clearing all camps once, you will have ~650 gold, means you need one gank + some lane farm and maybe 1 jungle camp and you would already have them.

This is a good guide, but I gotta disagree with the jungle route. Blue (smite), wight, Red (smite) is my route of choice, as you still hit level 3 after red, and you shave time off by smiting 2 out of 3 camps.

Isn't that your account playing as Nasus in the first screenshot?

Still, his playstyle offers fun and he has a good kit synergy for a tanky role. It is just that the numbers of his kit are outdated, like the ultimate heal radius, the base as, having no movement bonus with no gap closer, etc. I am aware, that he is absolutely not a champ you would pick over anyone else for any reason except if you want to have fun with a champ which fits your playstyle.

But you can still get it to work and if it works, you feel awesome. And I generally made in my games the experience, that I got a lot of fun ganking in the early game because nobody expects that giant instant damage.

I never said I didn't like Sion. I just understand he's arguably the worst champion in the game right now.

Also I like making fun of bad ideas.

If you don't like a champ in general, why you wanna read a guide about him?

And AS Quints give 10% AS. Glyphs give 5%. The mastery gives 5% aswell. So, you shouldn't skill the AS mastery on any one because it doesn't do ****? Or you shouldn't get AS Quints because they only give the double of nothing?

First: people on PBE are garbage.
Second: 4% from runes at level 1 won't change anything
Third: They will 100% invade because Sion jungles stupidly slow. If they always do it, then you should ALWAYS do a smiteless red.
Fourth: Those stats don't show the viability nor give incentive to play jungle Sion.

How would I have fun with a **** build on a **** champion?

First: People play on PBE aswell.
Second: You got ****ty base AS, you need them. If you think you got something better, validate this.
Third: I mentioned that if you think the enemy invades you, go smiteless red and then the rest of the route.
Fourth: Read again pls, you clearly didn't read anything.

I think you are onto a good track. There obviously is room for revisement as anyone can tell from simply skimming through the guide.

I do not know much about PBE changes so I cannot yet rate this guide based on validity. I am simply going on effort, editing and coding.

That being said one nice piece of constructive criticism I can offer is for you to change your build name from "Build 1" to something more creative that also indicates what lane the build is designed for.

EDIT:

Also the build sets themselves could use some clearer organization, Ill send you a sample in a pm.