Upgrade gems

Bought from NPC Ursa in Jormungandr's Mountain town for 1 silver token. Used for upgrading weapons and equipment. Upgrading weapon increases its attack by 1 point per level. Upgrading armor increases armor value.

Max upgrade level is 9. With each level chance for succes is lower, you might even go down by few levels, e.g. 7->4.

Example:
 * You see a golden helmet +5  ( Arm:20 , protection all +8%).It can only be wielded properly by players of level 250 or higher
 * You see a umbral master crossbow +7  (Range: 6,  Atk +24 , Hit% +12, distance fighting +3, critical hit chance +15, critical hit damage +100, life leech chance +100, life leech amount +15).
 * You see a star amulet +5  ( Arm:6 , protection all +3%).