From Dungeons and Dragons Wiki
|This material from the 5th edition SRD is published under the OGL|
Barkskin is a spell in 5th edition.
|Casting Time:||1 action|
|Components:||V, S, M (a handful of oak bark)|
|Duration:||Concentration, up to 1 hour|
You touch a willing creature. Until the spell ends, the target’s skin has a rough, bark-like appearance, and the target’s AC can’t be less than 16, regardless of what kind of armor it is wearing.