Spirit Bear can use items passively in backpack, including neutral items.

1) Give Spirit Bear some items and put them in backpack, for example Broom Handle, Dragon Scale & Ring of Aquila.
2) Let the Spirit Bear been killed once, and resummon it. (must been killed, level up this ability not works. even it cause bear dies.)
3) Now the items in backpack can give Spirit Bear their attribute.

Items in backpack offer their attribute now: attack range, damage, armor from Broom Handle; armor, HP regen, DoT from Dragon Scale; attack damage, aura from Ring of Aquila.

Items in backpack should not work.