cursedWeapons.xml config:

Every mob in a world can drop Cursed Weapon with drop chance %dropRate%.
Only one weapon of each type %item id% can exists in a world (Demonic Sword Zariche или Blood Sword Akamanah).
Dropped from mob weapon will live %durationNoKill% minutes.
Picked weapon, that dropped from mob, will exists least %durationNoKill% minutes until first PK.
Equipped weapon gives player skills %onEquip% (Void Burst, Void Flow).
After first PK, Cursed Weapon life time will be %duration% minutes.
After each PK, life time will be reset to %duration% minutes, but with loss %durationLossRatePerKill%.
After each %killsPerLevel% OK, weapon level will increase by 1.
If player picked up Cursed Weapon of another type, his weapon level will increase by 1, and picked weapon disappers.
Each weapon level equals to passive skill level %skillId%.
If player with Cursed Weapon were killed, weapon can disapper with chance %disappearChance%.
If weapon not desappered after player kill, it continue to live on ground only %durationDropped% time.
All stats, levels, life time and kills will be applied to next owner.