Reincarnated In Vikings

There is sub species for sorcerers/sorceress, which is Grisha they are strong. But they can only use a specific set of powers like one can only use either control wind or control fire or control water. They lived in tribes or clans, because of them became a member of Court in Kingdom of Fjerda, where he grew Powe hungry and tried to control the King, which failed and led to Kings paranoia regarding Grisha and these Grisha were hunted down and later became prisoners and slave of Fjerda. The Fjerda would later use these Grisha as spies or assassins to kill there enemies.

They make them follow orders by holding people close to them as hostages.

Merlin could rescue these people and make Camelot for these Grisha. But the issue where is Camelot, should they in the same location as Fjerda. Still having doubts about creating that in around Scotland or Northumbria, mainly because of Vikings show.

The next is Vampires, one of them is the Vanhelsing movie. But the second one is from either Buffy the Vampire slayer or something else.