At 1st level, you gain the ability to channel, and sometimes sacrifice, a part of your vital essence to curse and manipulate creatures through hemocraft magic. You gain one blood curse of your choice, detailed in the “Blood Curses” section at the end of the class description. You learn one additional blood curse of your choice, and you can choose one of the blood curses you know and replace it with another blood curse, at 6th, 10th, 14th, and 18th level.
When you use your Blood Maledict, you choose which curse to invoke. While invoking a blood curse, but before it affects the target, you can choose to amplify the curse by losing a number of hit points equal to one roll of your hemocraft die, as shown in the Hemocraft Die column of the Blood Hunter table. An amplified curse gains an additional effect, noted in the curse’s description. Creatures that do not have blood in their bodies are immune to blood curses, unless you have amplified the curse.
You can use this feature once. Beginning at 6th level, you can use your Blood Maledict feature twice, at 13th level you can use it three times between rests, and at 17th level, you can use it four times between rests. You regain all expended uses when you finish a short or long rest.