A bonus feat for the PF2e system on Foundry VTT that manually applies mythic proficiency to your rolls.

fvtt-Item-make-it-mythic.json

{
  "name": "Make It Mythic",
  "type": "feat",
  "effects": [],
  "system": {
    "_migration": {
      "version": 0.948,
      "previous": null
    },
    "description": {
      "value": "<p>Manually applies mythic proficiency to your rolls.</p>",
      "gm": ""
    },
    "publication": {
      "title": "",
      "authors": "",
      "license": "OGL",
      "remaster": false
    },
    "rules": [
      {
        "domain": "all",
        "key": "RollOption",
        "option": "make-it-mythic",
        "toggleable": true,
        "label": "It's Mythic Time!"
      },
      {
        "key": "AdjustModifier",
        "selectors": [
          "skill-check",
          "perception",
          "saving-throw",
          "spell-attack",
          "spell-dc",
          "strike-attack-roll"
        ],
        "mode": "upgrade",
        "value": "10 + @actor.level",
        "slug": "proficiency",
        "relabel": "Mythic",
        "predicate": [
          "make-it-mythic"
        ]
      }
    ],
    "slug": "make-it-mythic",
    "traits": {
      "otherTags": [],
      "value": [
        "mythic"
      ],
      "rarity": "uncommon"
    },
    "level": {
      "value": 1
    },
    "category": "bonus",
    "onlyLevel1": false,
    "maxTakable": 1,
    "actionType": {
      "value": "passive"
    },
    "actions": {
      "value": null
    },
    "prerequisites": {
      "value": []
    },
    "subfeatures": {
      "proficiencies": {},
      "senses": {},
      "suppressedFeatures": []
    },
    "location": null
  },
  "img": "icons/magic/holy/prayer-hands-glowing-yellow.webp",
  "folder": null,
  "flags": {},
  "_stats": {
    "compendiumSource": null,
    "duplicateSource": null,
    "exportSource": {
      "worldId": "mythic",
      "uuid": "Item.FiAURh4BpTrOHG40",
      "coreVersion": "13.350",
      "systemId": "pf2e",
      "systemVersion": "7.6.4"
    },
    "coreVersion": "13.350",
    "systemId": "pf2e",
    "systemVersion": "7.6.4",
    "createdTime": 1762456100163,
    "modifiedTime": 1762457395338,
    "lastModifiedBy": "aETAdUMAlj4thKWS"
  },
  "ownership": {
    "default": 0
  }
}