Entrance condition:

"comeInShinecharged": {},
"comesThroughToilet": "any"

Requires:

"canSuitlessMaridia",
"canHorizontalMidairShinespark",
{"shineChargeFrames": 85},
{"shinespark": {"frames": 59, "excessFrames": 21}}

Dev note: This could be done with Gravity to save Energy, but getting from 5 to 1 with Gravity and Speed Booster is free.