Crystal Flash required. Must have no E-Tanks (disable or don't collect). Disable suits and use two boulders to damage down. Shinecharge and spark quickly under the rightmost boulder to get the interrupt.

Entrance condition:

{
  "comeInWithRMode": {}
}

Requires:

{
  "disableEquipment": "ETank"
}
"h_CrystalFlashForReserveEnergy"
{
  "disableEquipment": "Varia"
}
{
  "disableEquipment": "Gravity"
}
{
  "canShineCharge": {
    "usedTiles": 16,
    "openEnd": 1
  }
}
{
  "autoReserveTrigger": {}
}
"canRModeSparkInterrupt"