Stand under where the gate will spawn when exiting G-mode to open it before grabbing the item.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "indirect",
    "morphed": false
  }
}

Requires:

{
  "or": [
    "SpaceJump",
    "canSpringBallJumpMidAir",
    "canWalljump",
    {
      "and": [
        "HiJump",
        "SpeedBooster"
      ]
    },
    "canTrickyDashJump",
    {
      "and": [
        {
          "canShineCharge": {
            "usedTiles": 28,
            "gentleUpTiles": 3,
            "gentleDownTiles": 3,
            "openEnd": 0
          }
        },
        "canMidairShinespark",
        {
          "shinespark": {
            "frames": 17,
            "excessFrames": 4
          }
        }
      ]
    }
  ]
}
{
  "heatFrames": 25
}

Clears obstacles: A