Ward of Protection

Description
The Ward of Protection is an item that can protect (a part of) an island from monsters. Once activated, it will prevent enemies from spawning in the area around it. The area is outlined via a blue grid when placing it down.

Activation
To activate it, you will need a Portal Stone. The color will depend on the island, however the glow of the structure will not. It will always glow the bright blue as seen below

After activating, the Ward can be broken at any time, however it will require another Portal Stone after being placed down again.