12

Samus will be slowed by lava if SpeedBooster is equipped, even with Gravity.

Requires:

{"or": [
  "h_lavaProof",
  "canSuitlessLavaDive"
]},
{"or": [
  {"and": [
    "HiJump",
    {"heatFrames": 270},
    {"lavaFrames": 270}
  ]},
  {"and": [
    {"heatFrames": 295},
    {"lavaFrames": 295}
  ]}
]},
{"or": [
  "canTrickyJump",
  {"and": [
    {"heatFrames": 60},
    {"lavaFrames": 60}
  ]}
]},
{"or": [
  {"and": [
    "SpaceJump",
    "canCarefulJump",
    {"heatFrames": 100}
  ]},
  {"and": [
    "canWallJump",
    {"heatFrames": 60}
  ]},
  {"and": [
    "canSpringBallJumpMidAir",
    {"heatFrames": 100}
  ]},
  {"and": [
    "canBombJumpWaterEscape",
    {"heatFrames": 180},
    {"lavaFrames": 30}
  ]},
  {"and": [
    "HiJump",
    {"heatFrames": 60},
    {"lavaFrames": 10}
  ]}
]}

Dev note: Varia no etanks is barely possible with vanilla Varia. Assumes waiting for the first namihe fireball if you are not practiced with the room.