Entrance condition:

{
  "comeInWithGrappleTeleport": {
    "blockPositions": [
      [
        12,
        12
      ],
      [
        12,
        13
      ]
    ]
  }
}

Requires:

{
  "or": [
    "canUseFrozenEnemies",
    "HiJump",
    "canSpringBallJumpMidAir"
  ]
}

Dev note: The requirements are for getting onto the platform. FIXME: it would probably be better to add another node below the platform; and flash suit is also an option for getting up onto it.