Needs a runway of 7 tiles with no open end in the adjacent room, to get enough height. This is a peak of height with speed booster, no hjb, while underwater. Jump before the transition with SpeedBooster off and then SpeedBooster back on after reaching the ceiling and Morphing.

Entrance condition:

{
  "comeInJumping": {
    "speedBooster": true,
    "minTiles": 6.4375
  }
}

Requires:

"canLateralMidAirMorph"
"canDisableEquipment"
"canCrossRoomJumpIntoWater"
"canSpringBallBounce"
{
  "or": [
    {
      "enemyDamage": {
        "enemy": "Puyo",
        "type": "contact",
        "hits": 1
      }
    },
    "canInsaneJump",
    {
      "and": [
        "Plasma",
        "canTrickyJump"
      ]
    },
    "h_pauseAbuseMinimalReserveRefill"
  ]
}