There are additional requirements for killing the Bull enemy who appears when Phantoon is defeated.

Requires:

{
  "not": "f_DefeatedPhantoon"
}
{
  "resetRoom": {
    "nodes": [
      1
    ]
  }
}
{
  "or": [
    "ScrewAttack",
    {
      "and": [
        "Plasma",
        {
          "cycleFrames": 60
        }
      ]
    },
    {
      "and": [
        "Grapple",
        {
          "or": [
            "Wave",
            "Spazer"
          ]
        },
        {
          "cycleFrames": 150
        }
      ]
    },
    {
      "and": [
        "canPseudoScrew",
        {
          "or": [
            "canFarmWhileShooting",
            {
              "cycleFrames": 300
            }
          ]
        },
        {
          "cycleFrames": 120
        }
      ]
    }
  ]
}
{
  "cycleFrames": 480
}

Clears obstacles: A

Farm cycle drops: 2 Custom Covern (Bull)

Dev note: This is Covern farm with a reduced drop chance so as to be applicable while powered off without breaking the powered on state. The weaponry must be able to kill a Bull and follow the dissappearing cycle of a Covern. Resetting the room is slower than waiting for the Covern to respawn, so it is counted as 2 drops. These Coverns have no Super or Missile drop chance.