Antilife Shell

A shimmering barrier extends out from you in a 10-foot emanation for the duration, hedging out creatures other than undead and constructs. The barrier lasts for the duration.

The barrier prevents an affected creature from passing or reaching through. An affected creature can cast spells or make attacks with ranged or reach weapons through the barrier.

If you move so that an affected creature is forced to pass through the barrier, the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the radius of the sphere increases by 5 feet for each slot level above 5th. In addition, when you cast this spell using a spell slot of 8th level or higher, the duration is concentration up to 8 hours and you can name specific creatures or a condition (such as a password) that would allow creatures to enter the barrier when they would ordinarily be hedged out.