Item Upgrade

Example Ordinary Knife --1st improvement--> Ordinary Knife +1 --2nd improvement--> Ordinary Knife +2

After improving two times, the chance of success starts to decrease with further improvements. The higher the level of improvement, higher the rate of failure. Ex. From +2 to +3 chance of successful improvement is 50% and from +3 to +4 the success decreases to 35% only!
Gems of chance comes handy to increase the chance of improvement of an item to higher levels
In case of failure improvement, the item condition will return to the previous state (level of improvement will decrease by 1).

Example item +4 --> attempting to make it +5 --> failed to improve --> the result of failure item will become item +3

Note: In case of failure to improve of an item with +9 to +10 and above, the level of improvement will return to 0 state
The maximum level to improve an item is +12

1. Upgrading Gem: 3 gems in initial upgrades and 4 gems in higher upgrades.

2. Gem of Chance: Needed from upgrades +2 and above. Increases the success rate of upgrades.

3. Crimson Gem: Needed for upgrades above +8. Single gem...