Redrum Wooded Forests Biome
+Super tall reddy/yellowy tree wood with red and black leaves that cover most of the sunlight that are 50-64 blocks tall.
+Makes players and Mobs (hostile and passive) take double damage. (Double edge sword like that makes it unique)
+Abundent amount of redstone and copper in the caves.
+Water Lakes are dry (but if water placed its blood red)
+Increased spider spawns at night.
+Rare small dungeons within hollowed out holes that is visable on the surface that provides super rare loot
That would be cool.