With bombs, kill the Zoas and they will stop spawning.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "any",
    "morphed": true
  }
}

Requires:

{
  "or": [
    {
      "and": [
        "Gravity",
        "h_canArtificialMorphIBJ"
      ]
    },
    {
      "and": [
        "h_canArtificialMorphSpringBall",
        {
          "or": [
            "Gravity",
            "HiJump"
          ]
        }
      ]
    }
  ]
}