The manga Battle Frenzy
matches all criteria.
Amidst a disaster, an orphan contracts a sickness.
In his waking hours, he is tormented by his ailment, but when he slumbers, there is infinite darkness.
One day, when he was five years old, a strange Fate Trickster appeared in his dreams. Ten years later, he dreams of becoming a lord. To do so, he takes a ...
The Grimoire (7903) for Shadowrun 2nd edition
Pages 110-125 of the Grimoire contain spell design rules. (Note that the magic expansion for the 1st edition was also called "The Grimoire".) The core rulebook for 2nd edition is also required for definitions of the various game mechanics involved. Some spell types require subjective input and ...
Might be Flame of Recca.
One of the characters, called Joker, dresses like a jester and can create black holes as an attack.
There are also mutated monsters (such as a man turned into a man-lion beast), but those are not created through black holes. Some monsters (zombies, I think) are biological experiments.
Anyone in the DC universe can learn magic, yes. But for humans it takes a special gene in order to be able to use it without the aid of magical items or pacts with magical entities.
People with such genetics belong to the Homo magi subspecies. This was shown for the first time in JLA #165, from 1979 (as seen in the link).
Homo Magi are naturally adept at ...
You're describing the Soulguard series of books by Christopher Woods.
I read it about five years ago and re-read it last year. There are five books in the series.
Some of your details are a little fuzzy, but you got his name right; Colin Rourke is an orphan whose mother was attacked by these demons when she was pregnant with him. She died soon after giving ...
This sounds like My Entire Class Was Summoned to Another World except for Me (Class ga Isekai Shoukan sareta Naka Ore dake Nokotta n desu ga, 2017). At least it sounds like the description given in this answer.
The main character is left out of the summoning circle because he was sleeping in a corner seat of the class room. He stays on earth with new powers,...
Seijo no Hazu ga, Douyara Nottoraremashita or I Was Summoned to Be the Saint, but I Was Robbed of the Position, Apparently, based on a web novel of the same name.
Anise suddenly gets a message on her phone one day asking whether she'd be willing to lend her their aid. As if responding to her thoughts, it chooses for her and she finds herself suddenly ...