Rat Jungle build

My personal perspective. Your buiild needs flat pen. I would go something like after your acorn The Crusher, Jotunn's Wrath, Arondight, Heartseeker and as last item a situational item, can be like Mantle of Discord or The Sledge.

You may get the Thistlethorn Acorn as people is suggesting which is the safer way to play rat jungle. However, thick is also a good acorn and it deals more mdamage late game but again, you need to master ratatoskr and knows exactly what you are doing and it is recommended only against comps that cannot interrupt your Flurry. Also remember to include Pen with this acorn and if possible even defenses, both works very well with this acorn.

If you don't want to worry about these stuffs thistle is better.

Trans isn’t good unstacked and I wouldn’t rush it after acorn especially if behind. I think Arondight is a safer and better option. Soul Eater is bad most of the time, avoid it in Jungle. Shifter’s is eh, you can swap it for Sledge. Void Shield is situational. Also i’d go the non-crit damage acorn in jungle.

I think the build also needs some flat pen, from the Mace tree items.

I think I would personally go Acorn > Crusher/Brawlers > Jotunn’s > Sledge / Void Shield / Ancile > Arondight > Heartseeker