Sea of Trees Mutation

Current forests are passive. I propose "Sea of Trees Mutation" - a rare event. Every 24 in-game days, a 30% chance triggers, then random tick next day. When active: sky turns purple, thick fog (visibility 20-40), players get "Erosion" debuff (slowness, blindness, nausea) that builds up, terrain changes with color shifts and vine/root obstacles. To counter: craft Purification Torches (glowstone+iron) for safe zones, or leave area to recover. Mutation lasts 2-3 days. This adds environmental survival without new mobs, encourages exploration and risk-reward, making forests feel alive and dangerous.