Corroding effect on armor in the sulfur pools

The idea is to use the corroding properties of sulfur within the game as follows:

Create a new effect called Corrode that affects metal armor (iron, gold and copper) causing negative effects such as decreased defense (per piece), the durability of the damage drops over time, and damage causes greater durability reductions. Gold has a less harmful rate.

When in contact with a pool of sulfur the corrode effect is applied while inside the puddle, exiting it, the effect ends until the fixed time ends.