Alright so I'm using Shadow as the base, and it has a similar start to Shadow, but the abilities I intend to make are quite different.

I want the blood rage ability to act as an early start ability, but it doesn't harm, it doesn't kill, doesn't infect, it merely is used for gaining points.

I do want the travel ability, though I'm guessing I can't change the animation. This ability is also gonna be a start ability an it will cost points to travel. I want to make it so that the PC has to relocate often early game whenever they use the blood rage ability, hence why it's a beginning trait.

If they do the blood rage thing for too long, then the world will begin to notice, just not sure how I'll implement that. Thinking if stay in a country for a year, then "okay something is wrong here, time to check this out" triggers.

Also, if there's a way, how can I make it so a cure is pointless, leaving only the bases that would pop up as the only means of defeating this being?

I'll undoubtedly run into more issues that I'm not sure how to implement, and if I can't find an answer elsewhere, then I'll post again later. But figured start with this and ask later when needed.