Ward

You make a small sigil on any surface. The mark can be engraved or drawn. Once the you have made the sigil, creatures of a chosen creature type below CR 1/2 cannot enter within a 30ft radius of the sigil. If forced to enter the ward range, affected creatures will be given the frightened condition and will attempt to run out of the ward. Making the sigil with blood raises the CR of the affected creatures by 1/2. The cut to obtain the blood deals 1d4 slashing damage.

The sigil can be destroyed if physically broken or if the spell dispel magic is cast on it. 

At Higher Levels.

For every level above 1st  the CR increases by 1/2 and the duration increases by 1 hour.