Lure a Mella from the right by breaking the speed blocks or using Morph. Then you need to manipulate it to go high enough to be used as a stepping stone once frozen.

Requires:

"canUseFrozenEnemies"
"canManipulateMellas"
{
  "or": [
    {
      "obstaclesCleared": [
        "B"
      ]
    },
    "Morph"
  ]
}