Ensnaring Strike

Spell Lists: Ranger
1st-level conjuration
Casting Time: 1 bonus action
Range: Self
Components: V
Duration: up to 1 minute -> Delayed Concentration

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 start of you next turn, at which point you may begin concentrating on the effect to maintain it until spell ends. A Large or larger creature has advantage on this saving throw. If the target succeeds on the save, the vines shrivel away.

If you cast another spell that functions as "the next time you make an attack roll do x", this spell fades away upon casting the second spell.

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.

At Higher Levels. 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.