Dota 2/Raigor Stonehoof the Earthshaker

""Did the earth move for you too?""

Earthshaker is a melee strength hero who is usually played as a support and initiator. Earthshaker possesses an array of abilities that makes him great at crowd control and deadly against grouped-up enemies. Earthshaker's primary ability is his Fissure, a strong disable that not only stuns, but also temporarily forms an impassable wall, making it not only a deadly stun but one with great utility, as it can be used to save allies or cut off creep waves. He also has a strong passive with Aftershock, which gives an additional stun and does additional damage, making his spell combinations more potent and letting him stun lock enemies for a short while. His Enchant Totem's damage boost is nothing to write home about, but its low cooldown and cheap mana cost makes it spammable enough to be used to trigger Aftershock. Finally, Earthshaker has a strong initiation spell with his ultimate, Echo Slam, which gets increased damage the more enemies it catches within the spell, making it extremely potent against enemy pushes and fairly powerful in teamfights. Unfortunately, Earthshaker's mana pool is relatively low, common for Strength heroes but a big problem for a hero that relies so heavily on his abilities. With good mana management and smart positioning, Earthshaker can shake things up at any teamfight.

Fissure
Fissure makes Earthshaker split the ground, creating an impassable line of rock and stunning enemies. Not only does it stun, it can also trap enemy heroes, denying them an escape route and ensuring an easy kill. It isn't necessary to block enemies with it, since most of the time the stun alone will be sufficient, but it is still something you should try constantly. It can also be used to protect your allies from pursuers, by using the ridge to slow them down or force them to take a different path. Note that since allies also can't pass through Fissure, you can sometimes make a situation worse by trapping a teammate on the wrong side of the wall of rock, so be careful with your aim.
 * Ability: Target Unit, Target Point
 * Affects: Enemy Heroes
 * Damage Type: Magical
 * Damage: 125 / 175 / 225 / 275
 * Fissure Duration: 8
 * Stun Duration: 1 / 1.25 / 1.5 / 1.75
 * Mana Cost: 125 / 140 / 155 / 170
 * Cooldown: 15

Enchant Totem
Enchant Totem causes your next attack to do bonus damage. This ability might sound boring, but it synergises very well with your passive ability. It is cheap in terms of mana cost for activating Aftershock, and it has a low cooldown to boot. Do not underestimate the bonus damage it grants. At level 4, you can be doing as much as 4 times your normal damage.
 * Ability: No Target
 * Bonus: 75% / 150 %/ 225% / 300%
 * Duration: 1 attack or 14 seconds
 * Mana Cost: 50
 * Cooldown: 5

Aftershock
Aftershock makes you create a shockwave that stuns and damages enemies every time you use an ability. It synergises greatly with your other abilities, making Enchant Totem more effective and making your Fissure and Echo Slam even more powerful.
 * Ability: Passive
 * Damage Type: Magical
 * Damage: 50 / 75 / 100 / 125
 * Radius: 300
 * Stun Duration: 0.6 / 0.9 / 1.2 / 1.5

Echo Slam
Echo Slam deals damage to a wide area around you. Every enemy that is hit will echo, doing bonus damage to everyone else. Catch a big group of enemies with one Echo Slam and you can do immense damage. This is your main initiation skill, useful for activating to counter pushes. It also deals good damage during teamfights, provided that you manage to catch more than 3 enemy heroes in one slam.
 * Ability: No Target
 * Damage Type: Magical
 * Damage: 200 / 265 / 340
 * Radius: 500
 * Echo Damage: 40 / 55 / 70
 * Mana Cost: 145 / 205 / 265
 * Cooldown: 150 / 130 / 110

Aghanim's Scepter can be bought for Earthshaker and will make each enemy hero caught in Echo Slam's radius to echo twice.

Standard Build
Get Fissure at level 1 and always max it by level 7, since it is your main source of damage and a very useful stun. At level 2, get Aftershock to improve your Fissure and get Enchant Totem at either level 3 or 4 for a cheap spell to activate Aftershock. After you max Fissure, max Aftershock second, since you rely far more on your spells than physical damage. Max Enchant Totem last, as its mana cost and cooldown remains the same throughout all levels and rarely gets used outside of triggering Aftershock. Get your ultimate Echo Slam at the standard levels 6, 11 and 16.

Suggested Item Build
As Earthshaker can contribute a lot with his spells alone, he is usually played as a support and gets less farm than his teammates. However, any items that boosts his mana pool and regeneration, lets him survive in a teamfight or simply lets him pull of a worthwhile Echo Slam are great choices for Earthshaker.

Starting items
Starting off, any combination of Iron Branches, Tangos and Healing Salves should be good enough. You may also want to get Clarities due to your horrible early-game mana pool, letting you use Fissures more in case you miss a kill attempt with one or want to be more aggressive in lane. Get the courier or wards if you're the support and no one else has purchased them. You might even go for a straight Bottle is you're playing as a roamer, though that leaves you for no gold for anything else.

Early-game items
A Magic Stick upgraded into a Magic Wand is generally a cost-effective item for instant regeneration, especially for mana. You should also get a Boots of Speed to help with positioning and for your eventual boot upgrade. A Bracer is optional, but it provides a good mix of stats that is affordable enough for any support.

Core items
A Blink Dagger is definitely recommended when using Earthshaker, as it lets you blink into groups of enemies to pull off surprise Echo Slams, greatly improving your ability to initiate teamfights. Your boot upgrade should be Arcane Boots, since you are so reliant on spells yet often starved of mana. After these two items, any more items you get will be a luxury, so feel free to help with warding or get more Bracers for further survivability.

Luxury/Situational items
An Aghanim's Scepter will greatly amplify your Echo Slam damage, but remember that it only does increased echo damage for every hero. It is quite useful against illusion-based heroes like Phantom Lancer, as their illusions count as heroes, potentially skyrocketing Echo Slam's damage. An Eul's Scepter of Divinity, a Rod of Atos or even a Scythe of Vyse will grant you an additional disable. A Ghost Scepter is a good defensive item to protect yourself against carries. A Shiva's Guard will give you a very helpful aura while giving you a lot of Intelligence. A Heart of Tarrasque is the ultimate survivability item if you can afford it, greatly increasing your stayability in teamfights.