Antilife Shell

Level & School
5th-level abjuration
Casting Time
Action
Range
Self
Components
V, S
Duration
Concentration, up to 1 hour
Classes
Druid

An aura extends from you in a 10-foot Emanation for the duration. The aura prevents creatures other than Constructs and Undead from passing or reaching through it. 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.

Level & School
5th-level abjuration
Casting Time
Action
Range
Self (10-foot radius)
Components
V, S
Duration
Concentration, 1 hour
Classes
Druid

A shimmering barrier extends out from you in a 10-foot radius and moves with you, remaining centered on you and 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.

Antilife Shell 5.5e 2024 vs. 5e 2014 edition differences

The 2024 version specifies "up to 1 hour" duration, indicating variable length, whereas the 2014 version states a fixed 1-hour duration. The 2024 version describes the barrier as an "aura" and "emanation," but the mechanics of creature passage and attack/spell casting remain the same.