Carry Temporary Blue through the top door of Mickey Mouse to break the left side of the bomb blocks. There is a small frame window where Samus can soft unmorph on the crumble blocks and jump again while retaining temporary blue.

Entrance condition:

{
  "comeInWithTemporaryBlue": {}
}

Requires:

{
  "notable": "Temporary Blue Crumble Jump without SpringBall"
}
{
  "obstaclesNotCleared": [
    "A"
  ]
}
"canPrepareForNextRoom"
"canChainTemporaryBlue"
"canInsaneJump"
"canCrumbleJump"
{
  "heatFrames": 300
}

Clears obstacles: B