{
  "parent": "twilightforest:alt/root",
  "criteria": {
    "helmet"    : { "trigger": "twilightforest:armor_changed", "conditions": { "to": { "item": "twilightforest:phantom_helmet"     }}},
    "chestplate": { "trigger": "twilightforest:armor_changed", "conditions": { "to": { "item": "twilightforest:phantom_chestplate" }}}
  },
  "requirements": [
    [ "helmet", "chestplate" ]
  ]
}