Nine

Items in their inventory when the game ended, across 9 games.

Item	Games	Of all games	Win rate
Blink Dagger	5	55.6%	20.0%
Power Treads	3	33.3%	0.0%
Phase Boots	2	22.2%	50.0%
Harpoon	2	22.2%	0.0%
Aghanim's Scepter	2	22.2%	0.0%
Force Staff	2	22.2%	0.0%
Magic Wand	2	22.2%	0.0%
Aether Lens	2	22.2%	0.0%
Soul Ring	2	22.2%	0.0%
Arcane Boots	2	22.2%	0.0%
Ghost Scepter	2	22.2%	0.0%
Abyssal Blade	1	11.1%	100.0%
Satanic	1	11.1%	100.0%
Battle Fury	1	11.1%	100.0%
Blade Mail	1	11.1%	0.0%
Bracer	1	11.1%	0.0%
Guardian Greaves	1	11.1%	0.0%
Scythe of Vyse	1	11.1%	0.0%
Roshan's Banner	1	11.1%	0.0%
Black King Bar	1	11.1%	0.0%
Bottle	1	11.1%	0.0%
Octarine Core	1	11.1%	0.0%
Quelling Blade	1	11.1%	0.0%
Radiance	1	11.1%	0.0%
Rod of Atos	1	11.1%	0.0%
Solar Crest	1	11.1%	0.0%
Holy Locket	1	11.1%	0.0%
Glimmer Cape	1	11.1%	0.0%
Observer Ward	1	11.1%	0.0%
Drum of Endurance	1	11.1%	0.0%
Aeon Disk	1	11.1%	0.0%
Tranquil Boots	1	11.1%	0.0%