Middle Sibling - [Lævateinn]

"... When they cast me into this hell, I fell without resistance..."

Through some way or another, you came into possession of the Legendary Blade, Lævateinn, A blade that burns with the fires of the Circles of Hell itself.

Sealed Sword and a Grudge - Level 3

"...Still, I did not lose my smile..."

Lævateinn
You gain a sealed, magic Greatsword. The great sword has a +1 to hit, is considered magical for the purposes of bypassing resistances and immunities, and Deals Bludgeoning damage.

As the battle goes on, you can remove the Seals on the sword. After each time you take the attack action, you gain 1 progress towards unsealing.
While you have unsealing progress equal to or greater than the unsealing requirement listed in the Seal State, you may consume Unseal progress equal to the requirement remove 1 seal from the sword at any point during your turn.
You must reach the previous Unseal Level to reach the next Unseal Level. You may only remove 1 seal on each of your turns. All Unsealing progress you have is removed at the end of combat.

The sword gains the following benefits after each unsealing:
- First seal removed (2 Unsealing Progress): +1d6 fire damage on hit. (2d6 bludgeoning damage plus 1d6 fire damage total damage)
- Second seal removed (3 Unsealing Progress): Bludgeoning damage changed to slashing, +2d6 fire damage on a hit. (2d6 slashing damage plus 2d6 fire damage total damage)
- Unsealed (4 Unsealing Progress, Final Unseal): Damage increased to 3d6 slashing damage + 3d6 fire damage. (3d6 slashing damage plus 3d6 fire damage total damage)
additionally, while in the Unsealed State, all creatures you choose within a 40 ft. sphere of you take 2d4 fire damage at the start of each of your turns.

The seals magically return to the weapon after combat ends.
At level 7, you start combat with 1 Unsealing Progress, and the weapon has a +2 to hit instead of a +1.
At level 10, you start combat with 2 Unsealing Progress.
At level 15, the weapon has a +3 to hit instead of a +1.
At level 18, you start combat with 3 Unsealing Progress.

Check this out!/Grudge
When landing an attack for the first time during your turn, you gain one stack of "Check this!", up to 10 stacks. On a hit with a weapon attack or unarmed strike, you can consume "Check This!" do deal bonus bludgeoning damage equal to twice the expended stacks.
If you land an attack with the first attack you attempted during your turn, you gain 2 stacks instead.
When you spend a total of 5 stacks of "Check this!", increase your progress towards unsealing by 1.

When you or an ally with 40 Feet of you are hit by an attack, you gain 1 "Grudge" stack (Up to 2 times per turn), which can be consumed to use or empower certain features. Grudge has a maximum stack of 10.
When you are hit by 2 attacks in a single round, you lose 1 "Check This!" Stack and gain 1 "Grudge" stack, ignoring the Grudge Gain per Turn limit.
All stacks of Grudge and Check This! Expire when combat ends.

Enhancement Markings/Rule Violation!!
Your Body is covered in body-enhancement Tattoos, increasing your strength and durability.
While you are unarmored, your AC equals (10 + your strength or constitution modifier + half of your proficiency bonus, rounded down). You can also add your proficiency bonus to your unarmed strike damage.
If you are wearing Light or Medium Armor, the effectiveness of the Tattoos' protection are diminished, you add half your proficiency bonus (rounded down) to your armor class.

When a creature makes an attack against you and hits, you may make 1 attack against them as a reaction. If the creature misses, you can spend 1 Grudge stack to make 1 attack against them without spending a reaction. You may only spend Grudge using this feature once per round. Attacks made this way do not count towards generating Unseal Progress. You do not gain 'Check This!' stacks or expend 'Check This!' Stacks through attacks made through this feature.
At level 10, you may make 2 attacks instead of 1, and you gain Temporary hit points equal to half your missing hit points the first time this feature is triggered each turn. The temporary hit points has a maximum of twice your fighter level, and expires at the start of your turn.
At level 18, you may make 3 attacks instead of 1.

Rising Fever - Level 7

"... For the Sword of Legends was mine."

Stomping and Punting
You can spend Grudge to empower your strikes.
Before you make a Unarmed Strike, you can choose to spend 1 Grudge to activate either Stomping or Punting:
- Stomping: On a hit, if the target is not prone, the target must make a DC (8 + Your strength or constitution modifier + your proficiency bonus), being knocked prone on a failure. If the target is already prone, they instead take additional damage equal to your fighter level. If the target is prone and on a floor that is not 'Solid' (Ie. The 2nd floor of a building or an unstable platform), on a hit the creature breaks through the floor, taking an additional 1d6 damage from the fall.
- Punting: On a hit, the creature is moved 10 feet in a direction of your choice. If the target is prone, they are moved 20 feet instead. If the movement is interrupted by a Sturdy object, like a strong wall or large pile of crates, the creature takes 1d6 bludgeoning damage for every 5 feet of movement prevented, up to 2d6.

Stamp of Vengeance
Once per round, when you use Rule Violation!! while at 10 Grudge stacks, you may spend 5 Grudge stacks to immediately make two additional unarmed strikes against the attacker. These attacks deal an additional 1d4 bludgeoning damage on hit. Restrictions from 'Rule Violation!!' apply to the additional attacks.
While you have at least 5 Grudge stacks when you use 'Rule Violation!!', you may expend 2 Grudge stacks to gain 1 Unsealing Progress, this can happen once per use of 'Rule Violation!!'.

Don't let a little thing like this Break You! - Level 10

"Oh yeah, I'm down to unbox a layer of packaging for this fight!"

Discard Packaging
When you remove a seal from Lævateinn, you may immediately make one ranged weapon attack as part of the Unsealing (10/40 feet range, 1 target, 1d6 Bludgeoning damage + [# of seals removed]d6 fire damage), as you lob the seal at the target. This attack does not generate Unsealing Progress.
If you have fully unsealed Lævateinn, your unarmed strikes deal an additional 1d6 fire damage, and you take 2 less damage from attacks, to a minimum of 1 damage taken.

Book of Vengeance - House of [_______] Special Clause
You gain a large, heavy book, colored purple and gold, this book is your Book of Vengeance. When a creature slights the Middle or a member of the middle, you may write their name in the book, along with the crime and punishment. All members of the middle who have a book of vengeance has the creature's name, crime, and punishment added to their book. Talk with your DM about what constitutes as a 'Slight' against the Middle. You may only write creatures into the book if they have Slighted the Middle or a member of the Middle.
Members of the middle will attempt to find and carry out the punishment listed on any creature written in the book. After the punishment is complete, the creature's name is crossed out of the book and disappears from the book within a few days.
Unless the Punishment is very severe, like killing a high-ranking member of the Middle, members of the Middle will only passively look for creatures in the book.

At the end of your turn, the creature that has landed the most hits on you or your allies gains "Target of Vengeance". When you hit a creature with "Target of Vengeance", or an ally within 40 feet of you hits a creature with "Target of Vengeance" using an unarmed strike or with an attack that deals Bludgeoning damage, an additional 1d6 Bludgeoning damage is dealt (once per attack). Only one creature can be the "Target of Vengeance" at a time. Target of Vengeance is removed when combat ends.
All of Your attacks benefit from Book of Vengeance, regardless of the damage type.
Only one creature can have Target of Vengeance at a time, if the creature with Target of Vengeance is reduced to 0 hit points, all allies that have damaged the creature gain 3d6 temporary hit points.

I'll gut you like a fish! - Level 15

"Be warned, it's gonna be hot, Hot as hell!"

Inferno [Lævateinn]
While Lævateinn is fully unsealed, after making an attack using it (hit or miss), all creatures you choose within 15 feet of you must make a constitution saving throw (DC = 8 + your strength modifier + your proficiency bonus), taking 2d4 fire damage on a failure. Each creature can only be affected by this feature once per turn.

Ridiculous Grit
When you fully unseal Lævateinn, until the end of your next turn, all damage you take that is above 5 is reduced to 5 (after any other instance of damage reduction). After this effect expires, you gain "Ridiculous Grit" until the end of combat. While you have "Ridiculous Grit", Reduce the damage you take by your proficiency bonus (cannot be reduced below 0), and deal additional damage equal to the number of attacks that hit you during the previous round.
Once per long rest, when damage would reduce you to 0 hit points, you instead take no damage from that source and regain hit points equal to twice your Fighter level.

"Your Sacrifice Won't be Forgotten..." - Level 18

"Remember, Kiddo? We're family. A little sacrifice ain't a thing between us!"

Good [____]... Your Sacrifice for the Family Won't Be Forgotten.
While Lævateinn is fully unsealed, when an ally within 60 Feet of you is hit by an attack, and the damage from said attack would reduce them to 0 Hit Points or below, you can use your reaction to cancel the attack and immediately move within 5 feet of an ally and make an attack with Lævateinn, targeting both the triggering creature and the ally. The attack automatically hits and is considered a critical hit as the Ally holds the attacker in place so you can strike them down, at the cost of the Ally also being cleaved.
Your ally cannot be killed by the damage from this attack. If your attack reduces your ally to 0 hit points, they become stable.

If you reduced an ally to 0 hit points with this feature, you gain "Avenging my Family" until combat ends.
While you have Avenging my Family, you gain a +2 to hit with attacks from Lævateinn, and you deal an additional 2d4 fire damage with all melee weapon attacks.

Complete and Total Extermination!!! [Lævateinn]
While Lævateinn is fully unsealed, while you have a total of 10 or more ('Check This!' stacks + 'Grudge' stacks), you can use a special attack:

Complete and Total Extermination [Lævateinn];
Make a weapon attack against a creature using Lævateinn, the attack has an additional +2 to hit, and rolling a '1' on the attack roll does not cause an automatic miss. On a hit, you expend all 'Check This!' Stacks and 'Grudge' stacks to deal (Grudge stacks expended)d6 Slashing damage + (Check This! stacks expended)d6 fire damage.
You can only use this feature up to 2 times per combat encounter.