If you had the power to create any ability, what would it be, and how would you balance it with a corresponding debuff?

[Hoshino]

Ability: Casualty manipulation and Conceptualization, nya.
Debuff: Every time I use this ability, my lifespan decreases, and the more I rely on it, the more it corrupts me and derives me to insanity, nya.

 

[Deleted member 84247]

I would use the power I already possess.

Ability: Being a gay vampire.
Debuff: The sun. Stepping into the sunlight significantly weakens me.

 

[Valmond]

Easy, the power will also erase the debuff. Complete OP power.

 

[Goat]

I would not make the power OP (relative) in the first place. And the balance would be not in a debuff feature, rather an actually challenging antagonist/conflict.

Ability: Mind Reading.
Balance: the antagonists are zombies or alien robots.

 

[lirvothethird]

Ability: Wind Manipulation
Balance: Frail body, takes damage when held captive

 

[Prince_Azmiran_Myrian]

Ability: Dragon
Debuff: must hoard

 

[CarburetorThompson]

Ability: Destroy Serbia
Debuff: No more Serbia

 

[Cipiteca396]

Ew, Game Balance outside of games.

Ability: Turn people into my familiars, which makes them immortal shapeshifters who can return to my personal realm/mind fortress at will or when they 'die' to be resummoned later. Naturally I gain all the same benefits.
Debuff: We both have to accept the contract. If I and all my familiars die at the same time, it will be difficult to leave my realm since nobody's outside to summon us.

 

[ElijahRyne]

Ability: Casualty manipulation and Conceptualization, nya.
Debuff: Every time I use this ability, my lifespan decreases, and the more I rely on it, the more it corrupts me and derives me to insanity, nya.

Ability: Grant wishes.
Debuff: Not my own.

Ability: To walk a mile in an instant.
Debuff: Vomit every time.

Ability: Clairvoyance
Debuff: Cannot speak for 24 hours after using.

 

[Butt_Shaker]

I would use the power I already possess.

Ability: Being a gay vampire.
Debuff: The sun. Stepping into the sunlight significantly weakens me.

Ability: to become a gay vampire.
Flaw: every time he’s exposed to sunlight, it makes him straight.

 

[Deleted member 84247]

Ability: to become a gay vampire.
Flaw: every time he’s exposed to sunlight, it makes him straight.

That would not even be a weakness. Basically if I went into the sun nothing would change. It's not like you have to do anything with your sexuality.