private void fightEerie(World world, int x, int y, int z) {
    int rx = ReikaRandomHelper.getRandomPlusMinus(x, 32);
    int rz = ReikaRandomHelper.getRandomPlusMinus(z, 32);

    if (world.checkChunksExist(rx, 0, rz, rx, 255, rz)) {
      int r = 3;
      for (int i = -r; i <= r; i++) {
        for (int k = -r; k <= r; k++) {
          int dx = rx + i;
          int dz = rz + k;
          BiomeGenBase biome = world.getBiomeGenForCoords(dx, dz);
          int id = biome.biomeID;
          if (id == ThaumBlockHandler.getInstance().eerieBiomeID) {
            BiomeGenBase natural = ReikaWorldHelper.getNaturalGennedBiomeAt(world, dx, dz);
            if (natural != null) {
              ReikaWorldHelper.setBiomeForXZ(world, dx, dz, natural);
            }
          }
        }
      }
    }
  }
  private void convertPureNodeMagic(World world, int x, int y, int z) {
    int rx = ReikaRandomHelper.getRandomPlusMinus(x, 64);
    int rz = ReikaRandomHelper.getRandomPlusMinus(z, 64);

    if (world.checkChunksExist(rx, 0, rz, rx, 255, rz)) {
      int r = 3;
      for (int i = -r; i <= r; i++) {
        for (int k = -r; k <= r; k++) {
          int dx = rx + i;
          int dz = rz + k;
          BiomeGenBase biome = world.getBiomeGenForCoords(dx, dz);
          int id = biome.biomeID;
          if (id == ThaumBlockHandler.getInstance().magicBiomeID) {
            BiomeGenBase natural = ReikaWorldHelper.getNaturalGennedBiomeAt(world, dx, dz);
            if (natural != null && DyeTrees.isRainbowForest(natural)) {
              ReikaWorldHelper.setBiomeForXZ(world, dx, dz, natural);
            }
          }
        }
      }
    }
  }