Cortinius

Appearance
Cortinius resembles a mushroom from the mushroom biome. It has a blue cap and white spots.

About
As of right now, It can only be naturally spawned while the player is in an underground mushroom biome. Before it spawns, the status message: "Mushrooms start to pop up everywhere..." will show. Upon defeating it, the player gets the achievement: "Morel of the Story".

Battle
When in its first form, It follows the player around and shoots spores every five seconds. The spores do 10 damage and bounce around until they either hit the player or despawn. In its second form, It shoots spores more rapidly, making it harder to hit Cortinius.

Trivia
Cortinius is based off of the Cortinarius iodes mushroom.

It was going to be named Armagaric at one point, but was changed due to Fly Agarics having red caps instead of blue ones.

The achievement is a pun on "Morel", a kind of mushroom, and "moral".