The Archive of Esoteric Secrets

Wildergrow

2-level Conjuration

You conjure a shield of foliage around your target, granting a +2 bonus to AC and saving throws for the duration. When your concentration on the spell is broken, either by a failed concentration check, or by ending your concentration at will, the shield explodes in a 10-foot radius centred on the target. Each creature within range, except the target, must succeed on a Dexterity saving throw or take 3d4 bludgeoning and 3d4 slashing damage.
At higher levels: When you cast this spell using a spell slot of 3rd level or higher, the damage dealt increases by both 1d4 slashing, and 1d4 bludgeoning per spell slot level expended above 2nd.