Sentry Shroom

Sentry Shrooms are hard mode plants found in the Sanctuary (Biome). They grow on top of Cozegrass. When an enemy approaches the mushroom, it will begin to summon spores that home onto enemies from up to 50 blocks away that deal 50 damage in a 5 tile radius once every 2 seconds. Sentry Shrooms are 2x2 plants that must be actively hit with a pickaxe to be chopped down, and do not drop anything when destroyed.