Windrunner can be both Support and Carry hero as her skills are situational during the game. Her mobility to go around and kill enemies is helpful as a support and can be more helpful when she is converted into a carry. Her items could deal more on Carry and regenerative items but not all supporting items are chosen.
The early game item build for Windrunner can be the following:
Ironwood Branch – This item grants each attributes for Windrunner giving her more strength and toughness to survive the early game plus the intelligence for mana support.
Ancient Tango of Essifation – This item helps Windrunner to regenerate when in mid health condition.
Healing Salve – This item helps Windrunner to regenerate more fast whenever he is in a low health condition.
Magic Stick – This helps you to counter spell caster enemy heroes.
Clarity Potion – This item helps Windrunner to regenerate his mana whenever it is in low condition.
Boots of Speed – This grants Windrunner movespeed for chasing and escaping.
Empty Bottle – This item keeps you to cast spell in constant giving you source of mana and health. Require to play with a courier.
The mid game item build for Windrunner can be the following:
Magic Wand – This helps you to regenerate your mana and health in an instant depending on its charge.
Phase Boots – This gives additional movement speed and attack damage to Windrunner.
Mekansm – This grants HP regeneration aura for Windrunner and her allies.
Force Staff – This helps Windrunner in chasing and escaping.
Eul’s Scepter of Divinity – This grants Windrunner the ability to cyclone enemies and herself for chasing, setting and escaping.
The late game item build for Windrunner can be the following:
Linken’s Sphere – This provides Windrunner an improvement to his regeneration and stats.
Orchid of Malevolence – This provides attack speed bonus and mana regeneration to Windrunner.
Aghanim’s Scepter – This improves his ultimate skill reducing its cooldown and improving damage.
Shiva’s Guard – This item grants Windrunner negative armor aura to her enemies and the ability of Arctic Blast.
Guinsoo’s Scythe of Vyse – This item helps her to disable any hero giving her the ability of Hex.