Entrance condition:

"comeInWithGMode": {
  "mode": "any",
  "morphed": false
}

Requires:

{"or": [
  "HiJump",
  "canWallJump",
  "SpaceJump",
  "canIBJ",
  "canSpringBallJumpMidAir",
  "h_crouchJumpDownGrab"
]}

Exit condition:

"leaveWithGMode": {
  "morphed": false
}

Dev note: There could be an artificial morph IBJ option, but that would just bypass a crouch jump + down grab requirement.