Fire Dragon Slayer Magic [WIP]

Fire Dragon Slayer Magic is a type of Dragon Slayer Magic that grants the user various characteristics typical of a Fire Dragon: lungs capable of spewing flames, scales that grant protection against fire, and nails covered in flames. Consequently, Fire Dragon Slayer Magic allows the user to produce and control fire from any part of their body, which can be used both in melee and as a ranged form of offense. The generated flames can be manipulated in a wide variety of ways, their “type” can be changed at will, and they can even be given a material consistency. Such fire seems to have a “blunt” effect to it, seemingly causing bludgeoning damage alongside burning. Flames produced by this type of Magic provide much more heat than standard flames, and are directly connected to their feelings, meaning the more emotional they get, the warmer their flame will become; this effect is referred to as “Flames of Emotion".
In addition, the user can consume external sources of fire to restore their body to a healthy state and regain their reserves of strength, something that also makes them immune to most types of fire, due to their capability of nullifying fire-based attacks by sucking them in and eating them; the consumed fire also seems to possess a different “taste” according to its “quality” (as per the rules of this forum, it is possible to eat one Fire spell per post this way, provided its rank is lower than the user's). However, the user can’t eat their own flames, or things set on fire by them, to reinvigorate themselves, nor can they eat the flames generated by a Fire God/Devil Slayer.

As demonstrated by Natsu in the anime, the main selling point of this magic is its ability to manipulate heat. The mage can burn hotter and hotter, and the otter s/he burns, the strongest his/her attacks are. Basically, it is all about building heat: you increase your temperature to make your next attack stronger, but as you fire off said attack, your temperature goes down (imagine a pressure cooker: if you let the steam out, the inside cools down a bit)

To recreate this effect in a written roleplay (where keeping track of one's temperature is of course impossible), I have come up with the idea of Heat Counters. Basically, Heat Counters are points, like the chips in poker: the more you have, the hotter you are. Here is an overview of what they do for this magic:

1) The mage always begins a battle having 0 Heat Counters.

2) Heat Counters can only be obtained by using specific spells (see the "Spells" section below). So yeah, there IS a cost to obtaining these counters: the mana cost of the spells in question.

3) Once a Heat Counter has been obtained, it remains "stored" (it's up to the mage to keep track, in their posts, of how many Heat Counters they have stored). As long as Heat Counters stay stored, they effectively do nothing. The maximum amount of Heat Counters that can be stored depends on the mage's current rank (see the "Perks" section below).

4) Upon casting an offensive spell, the mage can spend any amount of their stored Heat Counters, to boost the offensive spell's power by 0.25 per counter spent. Of course, "any amount" means "up to the maximum amount they are allowed to store at their current rank". Again, see the "Perks" section below.

This is all. As a rule of thumb, spells whose name is "Fire Drive: Something Something" are spells that deal with gaining Heat Counters, while spells whose name is "Fire Dragon's Something" are offensive spells.

Name: Fire Drive: Heat Up
Rank: D
Type: Supplementary
Range: None (targets self)
Appearance: A faint red glow around the user
Description: Gains one Heat Counter. The user just stands there, strikes a pose, and just like that one Heat Counter is stored.
Extra: During the post this spell is used, no other actions can be performed. Meaning, the user is left open to enemy attacks. Not exactly the most efficient way of gaining Heat Counters...

Name: Now that I've eaten, I'm all fired up!
Rank: D
Type: Supplementary
Range: None (targets self)
Appearance: A faint red glow around the user
Description: If the user decided to spend one post eating a Fire spell that hit them previously, during that same post they can use this spell to gain two Heat Counters.
Extra: It should be clear enough, but this spell can only be used if the mage ate fire in that same post.

Name: Fire Drive: Flint
Rank: D
Type: Offensive
Range: Point blank
Appearance: A small fireball (2 m of diameter)
Description: Generates a fireball directly in front of the user. This fireball has a diameter of 2 m and just stays there for the rest of the post, before disappearing. Base damage is 1, inflicts Burning status on opponents if they come in contact with it.
Extra: It is possible to hit this fireball with another offensive spell, to make it start moving. For example, by using Fire Dragon's Iron Fist one can punch it towards the opponent. In this case, the fireball travels in a straight line for a maximum of 10 m, and its base damage on hit is 1+the base damage of the spell that was used to get it to move. The speed at which it travels depends on the rank of the spell that was used to get it to move.

Name: Fire Dragon's Iron Fist
Rank: C
Type: Offensive
Range: Point blank
Appearance: You have seen it a trillion times in the anime
Description: One of the most iconic spells of this magic. Envelops one fist in flames, then punches with it. Base damage is 1.5, causes Burning status on hit, and can also knock the opponent back by a maximum of 12 m.
Extra: -