A normalized entrance to the room can be used to manipulate the Sm. Dessgeegas and do this strat reliably without heat protection. The following is one way to do this; other approaches may also be possible. Before entering the room, damage down to between 90 and 125 energy. Position one pixel away from the door in the previous room. Enter the door transition (with or without holding dash), then hold dash and left until falling off the platform. Turn around and hold right, landing in the corner. Morph and lay a Power Bomb. Move slightly to the left to avoid being bounced by the Power Bomb explosion. As the Sm. Dessgeega approaches, roll under it to the left to avoid being hit. Roll back to the right to collect its Power Bomb drop (which should be a ground level) and return to where the Power Bomb was laid, in time to perform the Crystal Flash inputs.

Entrance condition:

{
  "comeInRunning": {
    "speedBooster": "any",
    "minTiles": 0,
    "maxTiles": 0.0625
  }
}

Requires:

{
  "notable": "10 Power Bomb Crystal Flash"
}
"canPrepareForNextRoom"
{
  "heatFrames": 420
}
"h_canHeated10PowerBombCrystalFlash"

Dev note: The heat frames include about a half second of leniency to position in the previous room in case it is also heated. FIXME: Find some way to properly express being above health bomb range, though it shouldn't be a serious problem here. Without heat protection, this is already accounted for by the heatFrames (though this is a bit hacky). With heat protection, it should be possible to farm a bit to get out of health bomb range.