It is possible to cross the spike pit with spring flings and two spike hits. Pause then jump just before the fade out ends and turn Spring Ball off in order to get more horizontal distance at the start and avoid one spike hit. Turn Spring Ball off and on again while jumping on the spikes to get across to avoid another.

Entrance condition:

{
  "comeInWithGMode": {
    "mode": "any",
    "morphed": true
  }
}

Requires:

"h_artificialMorphBombs"
{
  "or": [
    {
      "and": [
        "h_artificialMorphSpringBall",
        {
          "spikeHits": 4
        }
      ]
    },
    {
      "and": [
        "h_artificialMorphSpringBall",
        "h_artificialMorphBombHorizontally",
        {
          "spikeHits": 3
        }
      ]
    },
    {
      "and": [
        "h_artificialMorphSpringFling",
        "canTrickyJump",
        {
          "spikeHits": 2
        }
      ]
    },
    {
      "and": [
        "Morph",
        {
          "or": [
            "SpaceJump",
            {
              "and": [
                {
                  "spikeHits": 1
                },
                {
                  "or": [
                    "canUseIFrames",
                    {
                      "spikeHits": 1
                    }
                  ]
                }
              ]
            }
          ]
        }
      ]
    },
    {
      "and": [
        "h_artificialMorphIBJ",
        {
          "spikeHits": 10
        },
        {
          "or": [
            "h_artificialMorphBombHorizontally",
            {
              "spikeHits": 2
            }
          ]
        }
      ]
    },
    "h_artificialMorphLongCeilingBombJump"
  ]
}

Dev note: The IBJ from spikes has 2 extra spike hits added as a leniency.