Seven Scisers can be farmed. Use the 8th (a bottom left one) to interrupt spark. Leave the slower, local Sciser alive to use for the Shinespark interrupt. Position it in the ceiling cubby hole to safely perform the Shinecharge and jump into the Sciser as it walks back down.

Entrance condition:

{
  "comeInWithRMode": {},
  "comesThroughToilet": "no"
}

Requires:

"Morph"
{
  "or": [
    "h_CrystalFlash",
    {
      "and": [
        "h_RModeCanRefillReserves",
        {
          "or": [
            {
              "and": [
                {
                  "resourceMissingAtMost": [
                    {
                      "type": "PowerBomb",
                      "count": 0
                    }
                  ]
                },
                {
                  "partialRefill": {
                    "type": "ReserveEnergy",
                    "limit": 100
                  }
                }
              ]
            },
            {
              "and": [
                {
                  "resourceMissingAtMost": [
                    {
                      "type": "PowerBomb",
                      "count": 6
                    }
                  ]
                },
                {
                  "partialRefill": {
                    "type": "ReserveEnergy",
                    "limit": 20
                  }
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}
"canWaterShineCharge"
{
  "canShineCharge": {
    "usedTiles": 20,
    "openEnd": 0
  }
}
{
  "autoReserveTrigger": {}
}
"canRModeSparkInterrupt"