The early game item build for Earthshaker can be the following:
Ironwood Branch – This item grants each attributes for Earthshaker giving him more strength and toughness to survive the early game plus the intelligence for mana support.
Ancient Tango of Essifation – This item helps Kaldr to regenerate when in mid health condition.
Healing Salve – This item helps Kaldr to regenerate more fast whenever he is in a low health condition.
Magic Stick – This helps you to counter spell caster enemy heroes.
Observer Wards – This is a strategic item to spy on your enemies. Supporting heroes just like Earthshaker should do the warding strategy. This should maintain through the whole game.
Clarity Potion – This item helps Earthshaker to regenerate his mana whenever it is in low condition.
Smoke of Deceit – This supportive item helps Earthshaker and his allies to set a clash or gank against his opponents during the early game. This should be maintain through the whole game.
Sentry Wards – This strategic item helps Earthshaker to deward a spying observer ward nearby.
Boots of Speed – This grants Earthshaker movespeed for chasing and escaping.
The mid game item build for Earthshaker can be the following:
Kelen’s Dagger – This can help him to set his ultimate properly and also it helps him to set gank, escape and chase enemies.
Headdress of Rejuvenation – This may help Earthshaker for better health regeneration.
Medallion of Courage – This can do the killing faster because of armor degrading.
Urn of Shadows – This can help Earthshaker to serve himself and his allies in health regeneration. And also can do damage to enemies.
Magic Wand – This helps you to regenerate your mana and health in an instant depending on its charge.
Arcane Boots – This grants Earthshaker and his nearby allies mana whenever its cooldown.
Ancient Janggo of Endurance – This grants Earthshaker and his allies attack speed and movespeed.
The late game item build for Earthshaker can be the following:
Mekansm – This provides Earthshaker and his nearby allies armor and hitpoints.
Khadgar’s Pipe of Insight – This helps allies of Earthshaker and himself to prevent magic for damaging more.
Force Staff – This helps Earthshaker in chasing and escaping.
Eul’s Scepter of Divinity – This grants Kaldr the ability to cyclone enemies and himself for chasing, setting and escaping.
Dagon – This grants Earthshaker an ability to instant kill an enemy.
Aghanim’s Scepter – This improves his ultimate skill reducing its cooldown and improving damage.