A communication spell to get someone to hear you out and recognize that you're telling the truth, without their own misinterpretation/biases or those of others twisting their understanding
🕯️ matches/barbeque lighter
🕯️ fire safe dish + fire starter
🕯️ herbs (more info below)
🕯️ piece of paper + marker/pen
🕯️ object that represents the target of the spell (a taglock, poppet, photo, etc) that can be burned safely; if you have nothing and can't get/make anything, you can simply write their full name (and/or other identifying info) on the paper
🕯️ (optional) the Justice tarot card (or any other tarot/oracle card you associate with truth, fairness, patience, accountability, etc)
The only herb "crucial" to this spell is thyme (which is associated with truth,) but you can add any other herbs you think would be useful—some suggestions are:
🌿 rosemary (for unclouded judgement)
🌿 clove (for clarity and banishing negativity)
🌿 nettle (for stopping gossip)
🌿 lemon peel (for removing emotional/energetic blockages)
Dress the candle with the oil and light it
On the piece of paper, write a "letter" addressed to your target—something clear and direct, commanding them to listen and explaining whatever it is you want them to understand
Place your object (or letter) in front of you (on top of your cards, if you're using any,) and place the herbs around it
Charge the herbs with their relevant correspondences, then focus on the target while channeling your energy/intent into the object
With the dish in front of you, light your fire starter; as the fire gets going, read what you have written (aloud or in your head—whichever you are comfortable with/capable of) and add your herbs to the dish
When you're done reading, fold the letter up and throw it on the flames, along with your object
When the fire has died down and the dish has cooled, dispose of the spell components however you see fit (I personally use the need-fire [recipe? method?] which I found through @the-cobalt-athenaeum, and since it's literally mostly salt, there are ways I can't dispose of it if I don't want to repurpose it)
Leave the (still lit) candle somewhere you can see it, and let it burn itself all the way down
As always, exercise proper fire safety when doing spellwork
NOTE: this spell is not necessarily designed to actively sway someone's opinion or push them towards making a certain decision—rather, it's to give them accurate and honest information which, depending on what they choose to do with it, may or may not affect their perspective or actions. Then again, if you want to spin the spell that way, you certainly can.
Also, there's a lot of room for personal touches in this spell, based on your practice, experience, or desired outcome. Use different herbs, invoke a deity, write a full incantation or chant instead of a letter, change the colour of the candle (or omit it entirely)—whatever it is, I highly suggest you add your own personal touches, and I fully endorse you going hog wild with it if that's what you want to do.