Time Manipulation - With a small incantation, he can reverse time for an object, but it will be brought back to their original state after a while (For example, he used it on some broken bowls, which temporarily fixed them) or, when used on a person, would put them into an endless loop ("See, so if something bad happens to someone and you cast it on them... They have to experience that same tragedy over and over again! Nya ha!")
Blood Manipulation - That's really only there for indexing purposes, it's unknown how it actually works ("See, 'cause I've got one that makes blood come out your—")
Death Manipulation - Well, he has 3 curses
I'll go in order of what's listed in his profile
First, the slow and painful death, which requires prep, Sully asked for Henry to curse her, and as he was struggling due to her willpower, he decided on a much stronger curse. Henry then found her with a high fever, a burning chest, and a hard time breathing, after dispelling the curse, he then confirmed she was going to die, although she "totally still had five or six solid minutes left, though."
Second, the "instant death upon a mortal wound", Maribelle feared having a painful death, Henry then gave a solution "—I've got a special curse ready, see? Been working on it for a while now. If you're mortally wounded, it kills you off before you suffer any pain! Just...poof. Off ya go!"
Third, when Miriel was about to be attacked by a snake she was unable to notice, it just died, that's it, Miriel even comments on Henry's lack of action