Spoiler- Suggest You don't read, but you can do as you like

Like It says in the title I would suggest you don't read this, but this will contain a few spoiler regarding the story, Isaac's powers and maybe what he will do in the future.

I will update it once in a while or if I change anything.

I will start by saying that Isaac isn't a Hybrid but a Tribrid. His most prominent side being the wolf, followed by witch and than vampire.

This came to be by him being a descendent of Inadu, AKA the hollow, which in this ff had a child with a man from her tribe before she was killed. The son inherited her talent for magic, but didn't tap into his powers as he was present in the hands of said man while she was killed, and was also affected by the full moon curse, making his talent remain dormant.

About 480 years later, Isaac's father, an untriggered werewolf, last living offspring of Inadu, Fell in love with a widow who had a young daughter, and you can guess the rest...

Anyway, even before he triggered his curse, Isaac could feel his wolf part, even if only slightly. After he triggered the curse, he meditated like he did once in a while before, and in the process gained his first unique ability.

Every werewolf has 'a wolf' inside them, this wolf remains dormant except for during the full moon, or when the werewolf feels intense emotions or has an extreme change in state of mind.

In the meditation state, his wolf senses are enhanced by his magic naturally, allowing him to create a 'domain' with the radius of a few kilometers in which he can feel everything. In that state, he could also see and talk to those on the 'other side'.

When he drank the wine laced with blood and the immortality spell, if he was a normal human, or even a normal werewolf, it would have just left his system after awhile. But by following his routine and meditating every day, even though he couldn't enter the state of meditation.

This was actually caused by his wolf, which with the help of the magic circulated by the meditation, managed to 'consume' a large part of the magic within the wine and also preserved it, allowing it to stay inside Isaac's body.

On the night of the full moon, he was about to Transform finally into an enhanced, but mortal, werewolf, when Ayana's spell, which was bound with the power of the moon to his transformation, was triggered and the moment he and the wolf were about to assimilate, it caused an overflow of energy in his veins, eventually causing all of them to explode, which was enough to kill him.

Only because of the meditation, the magic of the immortality wine remained in his body, but with mostly the weaknesses caused by it. With the spell being bound to the sun and the white oak tree, Isaac wolf, which was already not bound to the moon, was no longer a counter to the the weakness of the sun and because of that he could still be burned by the sun even as a Tribrid.

With the spell of immortality taking what the user liked most about themselves, like the Mikaelsons enjoying their popularity in another continent and their sense of family. They now were no longer able to enter the houses of their friends uninvited, and were split as a family(though not directly, it was still related none the less.)

Meanwhile Isaac, didn't have anything in his life he truly enjoyed, except for his sister, who kept away from for her own good, who died in Elijah's hands, before his memories returned. He didn't even meet her child. And so, he could still enter houses uninvited.

Meanwhile his wolf consumed the benefits of the wine, gaining enhanced strength, speed, regeneration and the more... unique abilities.

Compulsion, for example, In Isaac's hands, could only affect animals and werewolves, but not humans and vampires. Unlike the originals, who could only affect humans and vampires, but not werewolves and animals. Witches could still not be compelled.

Another is the ability to create more of his kind. By biting a human being, the werewolf venom spreads into them, changing them. Like a snake, once not biting out of self-defenses and fear, if he knowingly tried, he could control the amount of venom in his bite, creating dry-bite which won't turn anyone. Or kill-bites, which will act like poison, killing the target(Isaac's venom specifically can even effect the originals, and if it is untreated over a long period, or gathered in a high enough concentration it will kill them.)

Unfortunately, he can't create vampire's or turn anyone immortal, but his blood can be used to cure a werewolf bite and any other disease or wound.

Only the werewolves turned by Isaac can create more, until either their offspring, beta or killer takes their place upon their death, becoming the new Alpha(similar to TW). Just like Isaac, they can choose if they want to turn the target or not.

Nature is fair... for what one gains, one loses, and for what one loses, one might gain.

Important to note, is that all immortals have to drink blood in the TVD universe, so to be immortal, one has to be at least part vampire(That is if we consider vampires as creatures with the need to consume blood to survive.)

Just like how the wolf side in Klaus, which is extremely fertile, allowed him to have a child even as a vampire, who are supposed to be sterile. Isaac, being mainly a wolf is also fertile, although unlike Klaus, the chances of him impregnating a woman is much higher, being equal to that of a normal person.

Ideas- opened to discussion

-Daylight Tattoo- Vampires in the show are seen to have tattoos, and they aren't there since the beginning, meaning in the show(even though I guess for the writers its just a plot hole) there is a way for vampires and werewolves to get them. (See Klaus for example, in season 2 he has no tattoo and season 4 he had the birds on his left arm.)

Sometime, Isaac will see that the probability of losing his ring is a weakness and will obtain his own, a tattoo made by a witch which acts like a daylight ring, but because he is still part witch, and unlike other ones who turned, hasn't lost his connection to the spirits, this ability will become permanent, with even witches being unable to affect it.

-Isaac's Katana- When it was bound with his blood, the sword got a few magical affects.

1) Poisonous to both Werewolves and Vampires- Isaac's blood if filled with Aconite(wolfsbane) and Blue Verbena(a type of vervain/verbena native to Japan), when his his blood was mixed with the sword, it absorbed those qualities, making every scratch caused by it to weaken both species.

2) Bleeding- Like in games, any injury caused by the sword will be far harder to heal.

3)Self Restoration- It gained Isaac's blood healing properties, making it never go blunt and even if it cracks or brakes, it will repair itself.

4)???

This is what I will give you for now, you can Comment if you have any ideas you would like to share.

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