Lay a Power Bomb, collect a Power Bomb from a Beetom drop, then return in time to press the Crystal Flash inputs. This can be done either by laying the Power Bomb in a corner against a door or Speed blocks, or by not moving horizontally when collecting the drop. There is a safe way to do this without taking Beetom damage: If entering from the left door, lay a Power Bomb when the first Beetom comes on screen, run through the drops before they appear, place a Power Bomb in the corner against the Speed blocks, pick up two Power Bomb drops, and return in time to press the Crystal Flash inputs. If entering from the right door, waste a Power Bomb if you are full, use Speed Booster to run part way through the Speed blocks and spawn Power Bomb drops, and then continue in the same way.

Requires:

{
  "or": [
    {
      "resetRoom": {
        "nodes": [
          1
        ],
        "mustStayPut": false
      }
    },
    {
      "and": [
        "SpeedBooster",
        {
          "resetRoom": {
            "nodes": [
              2
            ],
            "mustStayPut": false
          }
        }
      ]
    }
  ]
}
"h_can10PowerBombCrystalFlash"