New rare item: Lycantrophe leather

New item:

Lycantrophe leather (body armor)

Same stats as chain mail, gives (physical):

+ 25% lifesteal

+ 20 hit rating

+ 5% damage

Tight fit: Can not be unequipped for 10 seconds after being equipped or taking damage

During night:

Option 1 (active) allows you to cast "frenzy" on yourself lasting 1 minute, which gives:

+ berserk

+ 50% life steal

+ 10% damage

- you lose 2.5% max hp each second, but not when you're below 50% max hp

- AMP duration halved

Lycantrophe leather can't be unequipped during frenzy

Option 2 (passive) grants:

+ berserk

+ 50% life steal

+ 10% damage

- you lose 2.5% max hp each second, but not when you're below 50% max hp

- AMP duration halved

Drops: werewolf, ogre, ettin, mountain giant

The stats can be adjusted and also the bonuses, but the mechanics could work well considering that many of them are already in the game in one form or another.