Sapphire

Items in their inventory when the game ended, across 18 games.

Item	Games	Of all games	Win rate
Black King Bar	9	50.0%	33.3%
Aghanim's Scepter	6	33.3%	50.0%
Blink Dagger	6	33.3%	33.3%
Phase Boots	5	27.8%	20.0%
Boots of Travel	5	27.8%	20.0%
Linken's Sphere	4	22.2%	50.0%
Aether Lens	4	22.2%	25.0%
Octarine Core	4	22.2%	25.0%
Magic Wand	4	22.2%	0.0%
Abyssal Blade	3	16.7%	66.7%
Kaya and Sange	3	16.7%	0.0%
Daedalus	2	11.1%	100.0%
Manta Style	2	11.1%	50.0%
Heart of Tarrasque	2	11.1%	50.0%
Monkey King Bar	2	11.1%	50.0%
Butterfly	2	11.1%	50.0%
Gleipnir	2	11.1%	50.0%
Radiance	2	11.1%	0.0%
Reaver	2	11.1%	0.0%
Wind Waker	2	11.1%	0.0%
Arcane Boots	2	11.1%	0.0%
Scythe of Vyse	2	11.1%	0.0%
Dust of Appearance	2	11.1%	0.0%
Shiva's Guard	2	11.1%	0.0%
Tranquil Boots	1	5.6%	100.0%
Battle Fury	1	5.6%	100.0%
Swift Blink	1	5.6%	100.0%
Ghost Scepter	1	5.6%	100.0%
Hurricane Pike	1	5.6%	100.0%
Desolator	1	5.6%	100.0%
Refresher Orb	1	5.6%	100.0%
Harpoon	1	5.6%	0.0%
Assault Cuirass	1	5.6%	0.0%
Soul Ring	1	5.6%	0.0%
Blade Mail	1	5.6%	0.0%
Ethereal Blade	1	5.6%	0.0%
Observer Ward	1	5.6%	0.0%
Power Treads	1	5.6%	0.0%
Diffusal Blade	1	5.6%	0.0%
Mage Slayer	1	5.6%	0.0%
Orb of Frost	1	5.6%	0.0%
Khanda	1	5.6%	0.0%
Eye of Skadi	1	5.6%	0.0%
Overwhelming Blink	1	5.6%	0.0%
Energy Booster	1	5.6%	0.0%
Observer and Sentry Wards	1	5.6%	0.0%
Spirit Vessel	1	5.6%	0.0%
Crella's Crozier	1	5.6%	0.0%
Yasha and Kaya	1	5.6%	0.0%
Parasma	1	5.6%	0.0%
Ring of Tarrasque	1	5.6%	0.0%