Ensnaring Strike

Level & School
1st-level conjuration
Casting Time
Bonus action, which you take immediately after hitting a creature with a weapon
Range
Self
Components
V
Duration
Concentration, up to 1 minute
Classes
Ranger

As you hit the target, grasping vines appear on it, and it makes a Strength saving throw. A Large or larger creature has Advantage on this save. On a failed save, the target has the Restrained condition until the spell ends. On a successful save, the vines shrivel away, and the spell ends.

While Restrained, the target takes 1d6 Piercing damage at the start of each of its turns. The target or a creature within reach of it can take an action to make a Strength (Athletics) check against your spell save DC. On a success, the spell ends.

Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 1.

Level & School
1st-level conjuration
Casting Time
Bonus action
Range
Self
Components
V
Duration
Concentration, up to 1 minute
Classes
Ranger

The next time you hit a creature with a weapon attack before this spell ends, a writhing mass of thorny vines appears at the point of impact, and the target must succeed on a Strength saving throw or be restrained by the magical vines until the spell ends. A Large or larger creature has advantage on this saving throw. If the target succeeds on the save, the vines shrivel away.

While restrained by this spell, the target takes 1d6 piercing damage at the start of each of its turns. A creature restrained by the vines or one that can touch the creature can use its action to make a Strength check against your spell save DC. On a success, the target is freed.

Using a Higher-Level Spell Slot. If you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.

Ensnaring Strike 5.5e 2024 vs. 5e 2014 edition differences

The 2024 version states the target makes a Strength saving throw, while the 2014 version states the target must succeed on a Strength saving throw or be restrained. The 2024 version explicitly states the target or a creature within reach can take an action to end the spell, whereas the 2014 version states a creature touching it can use an action. The damage increase wording is simplified, but mechanically similar.