Requires:

{
  "or": [
    {
      "and": [
        {
          "not": "f_DefeatedPhantoon"
        },
        "canRiskPermanentLossOfAccess"
      ]
    },
    "canDash"
  ]
}
{
  "thornHits": 1
}
{
  "or": [
    "HiJump",
    "canWalljump",
    "canUseIFrames",
    "Grapple",
    "canHorizontalDamageBoost",
    {
      "thornHits": 1
    }
  ]
}

Dev note: When the power is off, the floor has thorns. if power is on and dash is available, then the floating platforms could be used instead to avoid all damage.