As of March 2018 Mobile Legends official website doesn’t have enough documentation about items. The only available item documentation in that website is the recommended items for each hero. There is no descriptions about the items themselves, not even item names.
The only official documentation about items is in the game itself. Even then, you need to play the game in order to see the full documentation. In the lobby there is no documentation about item recipes nor tier 1 and 2 items.
This is another attempt to document the items. The differences with the other item documentation sites are: the entire item descriptions are in one page, nothing is folded / hidden so I can search with CTRL+F, there are links to quickly jump between related items, and this is a way for me to practice generating a page with JSON in Jekyll :)
Unique Passive Divine Justice: After using an ability, the next basic attack will deal additional 70% of physical attack as true damage, 1.5s cooldown.
Unique Passive Chase Fate: When Divine Justice's effect is triggered, it will increase the hero's movement speed by 15%
Unique Passive Frozen: When own hero's HP drops below 30%, being hit by basic attack will lower target's movement speed by 80% and deal 50% of magic power as magic damage to the target. This effect has a 5s cooldown.
Unique Passive Exterminate: After a skill hits a target, magic attack will immediately increase 15%. The next skill damage will terminate this effect. This effect can last up to 3s with a built in cooldown time of 10s
Unique Passive Deter: When an enemy hero attacks, this ability will reduce his/her attack power by 4%. This effect lasts 2s and can stack up to 3 times.
Unique Passive Thunderbolt: After you use a skill, the next basic attack will carry an extra 40% of physical attacks as true damage, and slow the target and surrounding enemy units, lasts 1.5s. Effect can only be used once every 1.5sconds.
Unique Passive Deter: When an enemy hero attacks, this ability will reduce his/her attack power by 6%. This effect lasts 2s and can stack up to 3 times.
Unique Passive Immortal: Resurrect 2s after dying and get 15% HP and a shield that can absorb 300~1000 pts of damage. Shield lasts for 3s. Cooldown for this effect is 180s.
Unique Passive Brute Force: Attacking an enemy will increase one's capabilites, increasing movement speed by 2% and physical attack by 3%. This effect last 4s and can stack up to 4 times.
Unique Passive Greed: Get an extra 30% exp when jungling. Regain 4% of maximum health and 10% of mana after monster kill.
Unique passive Gorge: Increases damage by 0.5% on killing a jungle monster, stacking up to 2 times.
Unique Passive: Makes the battle spell retribution applicable to heroes: Reduces target's movement speed 70% (The effect will decay within 3s) and reduces target's Magic Resistance. Buying other advanced jungle gear will disable this effect.
Unique Passive Greed: Get an extra 30% exp when jungling. Regain 4% of maximum health and 10% of mana after monster kill.
Unique passive Gorge: Slaying jungle monster increases one's physical and magical defense by 3 up to 10 times.
Unique Passive: Makes the battle spell retribution applicable to heroes: Reduces target's movement speed by 70% (The effect will decay within 3s) and within a short period of time receive a shield that scales off maximum health. Buying other advance jungle gear will disable this effect.
Unique Passive Greed: Get an extra 30% exp when jungling. Regain 4% of maximum health and 10% of mana after monster kill.
Unique passive Gorge: Slaying Jungle monster increases your physical attack by 4. Stacks up to 10 times.
Unique Passive: Makes the battle spell retribution applicable to heroes: Reduces target's movement speed by 70% (The effect will decay within 3s) and reduces target's Magic Resistance. Buying other advance jungle gear will disable this effect.
Unique Passive Greed: Get an extra 30% exp when jungling. Regain 4% of maximum health and 10% of mana after monster kill.
Unique passive Gorge: Increases damage by 0.5% on killing a jungle monster, stacking up to 2 times.
Unique Passive: Makes the battle spell retribution applicable to heroes: Reduces target's movement speed 70% (The effect will decay within 3s) and reduces target's Magic Resistance. Buying other advanced jungle gear will disable this effect.
Unique Passive Greed: Get an extra 30% exp when jungling. Regain 4% of maximum health and 10% of mana after monster kill.
Unique passive Gorge: Slaying jungle monster increases one's physical and magical defense by 3 up to 10 times.
Unique Passive: Makes the battle spell retribution applicable to heroes: Reduces target's movement speed by 70% (The effect will decay within 3s) and within a short period of time receive a shield that scales off maximum health. Buying other advance jungle gear will disable this effect.
Unique Passive Greed: Get an extra 30% exp when jungling. Regain 4% of maximum health and 10% of mana after monster kill.
Unique passive Gorge: Slaying Jungle monster increases your physical attack by 4. Stacks up to 10 times.
Unique Passive: Makes the battle spell retribution applicable to heroes: Reduces target's movement speed by 70% (The effect will decay within 3s) and reduces target's Magic Resistance. Buying other advance jungle gear will disable this effect.