I'm currently a Plat 4 player. Done some theory crafting and came up with this Hecarim build which I feel is really great. Here is some proof, so you know what it's all about:

It works!

So the big thing about this build is not upgrading your talisman. Hecarim does not benefit alot from the warrior or cinderhulk enchantment, building this is slow and does not really give you a spike.

What you want to do instead is building Talisman for jungle sustain and bonus XP, then go straight for Ghostblade. Going straight for Ghostblade will give you a great spike, and you won't feel that you fall of in jungle either, since you still got mana regen and bonus XP with you Talisman.

So you mainly got 3 spells to chose from, ignite, ghost and flash.

I feel flash is pretty useless for Heca, might save your life once or twice in a game, if you mess up...

Ghost is pretty good with the recent buff to it, yet it falls of mid-late game. You have Ghostblade and Dead Man's Plate for movement speed, and with Gauntlet you can stick with most champs after engaging.

Ignite is therefor my favourite pick, it will really help your ganks and 1v1 much stronger.

Pros:
Fast jungle clear
Good jungle sustain
Great ganks
Insane burst on low armor targets
Can outrun close to all champs
Very tanky mid-late game


Cons:
Squishy early
Easy to mess up your engages
Risky ganks

Golems*, Red, Blue*, Grump, Wolves, Birds*

* = Smite

Try to pull of a gank now, while your vision buff is up.

Thank you for reading my guide, please rate and leave a comment.
If there is interest for my guide, I will put alot more work into it. I just wanted to scramble this togheter to see if anyone else can use this build to climb. Good luck!