I have two I need but I thinks its about a few brothers with special powers and they fight I have no idea what its called. And the other one is where a witch was killed and she comes out at night

No. 1 ~ They're not brothers, but I'll give this a try.
The Covenant (2006)
Starring Steven Strait, Sebastian Stan, Taylor Kitsch
IMDb synopsis:
Four young men who belong to a supernatural legacy are forced to battle a fifth power long thought to have died out. Another great force they must contend with is the jealousy and suspicion that threaten to tear them apart.

The Covenant (2006) - IMDb

No. 2 ~ This is a guess.
Darkness Falls (2003)
Starring Chaney Kley, Emma Caulfield, Lee Cormie
IMDb synopsis:
A vengeful spirit has taken the form of the Tooth Fairy to exact vengeance on the town that lynched her 150 years earlier. Her only opposition is the only child, now grown up, who has survived her before.

Darkness Falls (2003) - IMDb