Table of Contents:
1.Background story
2.The Troll
3.Info and Stats
4.Gameplay
5.Skill Build
6.Item Build
7.Playing With Other Heroes

1. Background story
When the Sentinel first gathered their forces, The Troll Warriors were considered primitive and unreliable. Their pride wounded, many refused to join, some even considering siding with the Scourge. Only a hotheaded young Warlord called Jah'rakal joined the Sentinel. Known as "Blinding Axe" in troll tongue, both for the blinding speed of his axes and his trademark blind technique, his unstoppable rampages have already made him a legend among his allies. However Jah'rakal fights not for the Sentinel, or even to defend the Ancients, but to show Elves, Men, Orcs and anyone else that trolls are the best fighters in the world.


2.The Troll
Pros:
[+] Can attack at Melee range, Can attack at Long range
[+] Can slow enemies
[+] He can make enemies' attack's miss
[+] Global AS increase to allies and self
[+] Low manacost of spells
[+] Total manacost of spells? 175 mana.
[+] Low cooldown of spells
[+] Longest cooldown of one of his skills? 20 seconds.
[+] Can gank a Thousand times in a row due to low cooldown and manacost
[+] His ultimate lasts twice on him, unlike the other heroes
[+] Silencing him still makes him unstoppable
[+] Item independent
[+] Can jungle as fast as lightning!
[+] Can gank all by himself
[+] His gamestyle depends on his Attack speed
[+] "Joo Wan Axe?" Is that the best language or what?!

Cons:
[-] Ethereal counters him
[-] Decreasing his damage counters him
[-] Slowing his AS counters him
[-] Wards counters his jungling phase, so it still counters him
[-] Ganking in a middle of 5 enemy heroes counters him
[-] Perma-disable/stun counters him
[-] Respawning for "80 seconds" counters him
[-] Banning him counters him
[-] Not remaking his skill counters him
[-] Not inventing him counters him
[-] Saying "counters him" counters him
[-] Also saying "counters him" makes him cry, still counters him

3.Info and stats:
Affiliation: Sentinel
Primary Attribute: Agility
Attack Range: 500/128 (Melee form)
Sight Range: 1800 / 800
Main Roles: Junggler, Ganker, Carry
Level 1 Stats
Strength: 17 + 2.2
Agility: 21 + 2.75
Intelligence: 13 + 1
Damage: 38 - 56
Armor: 2
Level 25 Stats (Including Bonus Stats)
Strength: 72
Agility: 89
Intelligence: 38
Damage: 106 - 124
Armor: 14
4.Gameplay:
Jungle or Lane?
Because of the change to Fervor, Troll's jungling ability was crippled. Not only was the maximum bonus IAS reduced to 40/60/80/100, but the counter is reset every time he switches targets. This means that Troll can no longer reach 100 bonus IAS from level 1 Fervor, and whenever he switches to a different creep, instead of the IAS counter being set to half, it is completely lost. The change of gaining 20 IAS from every attack is also made more for going up against the opponent. His new skills also hint that he is stronger in a lane. Jungling is hardly possible, not worth it, and not recommended.

Which Lane?
Troll doesn't have any escape mechanism so he should take the long lane. Top lane for Scourge and bot lane for Sentinel. Best if you lane with a babysitter that can pull neutrals to keep the creep wave close to your tower. The side shop also carries almost everything you need for the laning phase.
5.Skill Build:
Level 1 - Whirling Axes 1
Level 2 - Berserker's Rage 1
Level 3 - Whirling Axes 2
Level 4 - Fervor 1
Level 5 - Whirling Axes 3
Level 6 - Battle Trance 1
Level 7 - Whirling Axes 4/Fervor 2
Level 8 - Fervor 2/Whirling Axes 4
Level 9 - Berserker's Rage 2
Level 10 - Berserker's Rage 3
Level 11 - Battle Trance 2
Level 12 - Fervor 3
Level 13 - Berserker's Rage 4
Level 14 - Fervor 4
Level 15 - Stats
Level 16 - Battle Trance 3
Level 17+ - Stats
With this skill build you can take Roshan on level 12!
But if you survive first 25-30 min you are on the 'horse'!
6.Item Build:
Starting -3 GG branches+quelling blade+few tangoes and salve for heal.
Early/ Mid-Poor man's shield+Power Treads+Black King Bar+Healm of Dominator
Late-Buriza do Kayon+MKB+Butterfly+AC+Sataic+Heart/////Divine
MKB: Good against Mortred, Riki, Panda, Butterfly, and every other miss buffs!
Buriza: Trust me, you're enemy will go down in a matter of seconds.
Butterfly: Your dream come true
AC: Armor, Attack Speed, and Reduced Armor to enemies will really benefit you and your teammates for easier team rapes.
Satanic: The very best orb for you, my friend. After this, no one else can kill you
Heart Well, if you need that extra hp to tank more dmg, then get this! No one's stopping you (;
Divine: Ohmai...
7.Playing against other heroes:
Initiators: Depending in the situation, if the enemy initiatior goes in first, then obviously you will take them down first after you awaken from their disable.
Spellcasters/Supports: If your initiatior does his job well, then if possible, take out those spellcasters or supports hiding in the background. With them unleashing havoc with their spells and disables, it might be hell for you, except if you have gotten your BKB, then you can take them down easily.
The Rival Carry: After that you got to deal with the rival carry. IF they are well farmed and fat as you are, then 99% of the chance you will win, except if you're against Void. Remember, only a well and equally farmed void can take out Troll.
Tanks: Lastly, after you take out the enemy carry, you're going to deal with the tank last. Why? Well, their specialty is tanking the whole damage for his team, so if his team is dead and he is still alive, more likely than not you won the teamfight. That's why you gotta take him out last, if you can ignore him the whole teamfight. Happened once when we ignored the Bristle on the other team and just focused on the others, we won the team clash easily.