It would be nice if it were possible to make custom rune ritual recipes in which multiple items are consumed and not just the item on the master rune holder.
I can imagine that it could be implemented with a consume_item flag in the input so the recipe would look like that:

{
  "type": "mythicbotany:rune_ritual",
  "group": "rune_rituals",
  "center": {
    "item": "mythicbotany:fimbultyr_tablet"
  },
  "runes": [
    {
      "rune": {
        "tag": "botania:runes/wrath",
        "consume_item": true <---
      },
      "x": -5,
      "z": 0
        },
        {
      "rune": {
        "tag": "botania:runes/earth",
        "consume_item": false <---
      },
      "x": -3,
      "z": -2
        }
  ],
  "mana": 500000,
  "ticks": 200,
  "inputs": [
    {
      "item": "minecraft:polished_andesite"
    }
  ],
  "outputs": [],
  "special_output": "mythicbotany:mjoellnir"
}

In this example the wrath rune would get consumed and the earth rune would not get consumed

On MythicBotany-1.18.2-2.1.13.jar, even with 'true' on 'consume flag' the ritual does not consume the rune.

recipetype:mythicbotany:rune_ritual.addJsonRecipe("azure_silver_ingot",
{
"type": "mythicbotany:rune_ritual",
"group": "rune_rituals",
"center": {
"item": "botania:gaia_ingot"
},
"runes": [
{
"rune": {
"item": "mythicbotany:alfheim_rune"
},
"x": 2,
"z": 2,
"consume": true
},
{
"rune": {
"item": "mythicbotany:midgard_rune"
},
"x": -2,
"z": 2,
"consume": true
},
{
"rune": {
"item": "botania:rune_envy"
},
"x": -2,
"z": -2,
"consume": true
},
{
"rune": {
"item": "botania:rune_mana"
},
"x": 2,
"z": -2,
"consume": true
},
{
"rune": {
"item": "botania:rune_air"
},
"x": 4,
"z": 4,
"consume": true
},
{
"rune": {
"item": "botania:rune_fire"
},
"x": -4,
"z": -4,
"consume": true
},
{
"rune": {
"item": "botania:rune_earth"
},
"x": -4,
"z": 4,
"consume": true
},
{
"rune": {
"item": "botania:rune_water"
},
"x": 4,
"z": -4,
"consume": true
},
{
"rune": {
"item": "mythicbotany:muspelheim_rune"
},
"x": -4,
"z": 0,
"consume": true
},
{
"rune": {
"item": "mythicbotany:niflheim_rune"
},
"x": 4,
"z": 0,
"consume": true
}
],
"mana": 0,
"ticks": 200,
"inputs": [
{
"item": "mekanism:dust_lapis_lazuli"
},
{
"item": "mekanism:dust_lapis_lazuli"
},
{
"item": "thermal:silver_ingot"
},
{
"item": "minecraft:chorus_fruit"
},
{
"item": "minecraft:chorus_fruit"
},
{
"item": "minecraft:chorus_fruit"
},
{
"item": "minecraft:chorus_fruit"
}
],
"outputs": [
{
"item": "moremekanismprocessing:azure_silver_ingot",
"count": 1
}
]
});

Please open a new issue then