What would you do if you had..

the candle of the Nahru Visna and could travel into any comic universe?

When lit, it could turn powerful metas within close proximity effectively "mortal". And when its wax was crafted into a bullet, it could kill them.

Do I only get one candle?

I'd become a transdimensional arms dealer. Sell a few ultra rare bullets or mini-candles for gold or some rare piece of comic book tech + blueprint, then return to my dimension to profit.

@zdaybreak: Yep, you only get the one.

Judging from its size though, you could probably get at least a dozen or so rounds out of it.