{
  "format_version": "1.26.10",
  "particle_effect": {
    "description": {
      "identifier": "minecraft:wither_boss_invulnerable",
      "basic_render_parameters": {
        "material": "particles_alpha",
        "texture": "textures/particle/particles"
      }
    },
    "components": {
      "minecraft:emitter_lifetime_once": {},
      "minecraft:emitter_rate_instant": {
        "num_particles": 1
      },
      "minecraft:emitter_shape_custom": {
        "direction": [
          {
            "expression": "variable.direction.x",
            "version": 0
          },
          {
            "expression": "variable.direction.y",
            "version": 0
          },
          {
            "expression": "variable.direction.z",
            "version": 0
          }
        ]
      },
      "minecraft:particle_appearance_billboard": {
        "size": [
          0.125,
          0.125
        ],
        "facing_camera_mode": "lookat_xyz",
        "direction": {
          "mode": "derive_from_velocity",
          "custom_direction": [
            0,
            0,
            0
          ],
          "min_speed_threshold": 0.1
        },
        "uv": {
          "texture_width": 128,
          "texture_height": 128,
          "uv": [
            0,
            0
          ],
          "uv_size": [
            1,
            1
          ],
          "flipbook": {
            "base_UV": [
              64,
              64
            ],
            "size_UV": [
              8,
              8
            ],
            "step_UV": [
              -8,
              0
            ],
            "frames_per_second": 6,
            "max_frame": 8,
            "stretch_to_lifetime": true
          }
        }
      },
      "minecraft:particle_appearance_lighting": {},
      "minecraft:particle_appearance_tinting": {
        "color": {
          "gradient": {
            "0.000000": [
              0,
              0,
              0,
              1
            ]
          },
          "interpolant": 0
        }
      },
      "minecraft:particle_initial_speed": {
        "expression": "(Math.random(0, 1) + Math.random(0, 1) + 1) * 0.4",
        "version": 0
      },
      "minecraft:particle_lifetime_expression": {
        "max_lifetime": {
          "expression": "Math.random(0.85, 1.35)",
          "version": 0
        }
      },
      "minecraft:particle_motion_collision": {
        "collision_drag": 1,
        "coefficient_of_restitution": 1,
        "collision_radius": 0.5,
        "events": []
      },
      "minecraft:particle_motion_dynamic": {
        "linear_acceleration": [
          {
            "expression": "(variable.particle_random_1 * 2 - 1)*0.5 - (variable.particle_age * 0.4) * 2.5",
            "version": 0
          },
          {
            "expression": "1 + (0.08 * variable.particle_age) - (variable.particle_age * 0.4) * 1.5",
            "version": 0
          },
          {
            "expression": "(variable.particle_random_2 * 2 - 1)*0.5 - (variable.particle_age * 0.4) * 2.5",
            "version": 0
          }
        ]
      }
    }
  }
}