Paul Mauser
Paul pulls a wooden canister off his belt, twists the two parts, and then tosses it to land between the party and the boar. It pops open, and a thick mass of sticky gray webs forms a wall between the party and the boar.
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Last (other) 2nd level slot to cast Web, DC 15.
I'm counting mostly on it being a visually thick and obviously obstructive mass to make them go around it. Alternatively, if they charge in, enough should get stuck to block their path.
Plenty of trees to anchor it with.


You conjure a mass of thick, sticky webbing at a point of your choice within range. The webs fill a 20-foot cube from that point for the duration. The webs are difficult terrain and lightly obscure their area.

If the webs aren't anchored between two solid masses (such as walls or trees) or layered across a floor, wall, or ceiling, the conjured web collapses on itself, and the spell ends at the start of your next turn. Webs layered over a flat surface have a depth of 5 feet.

Each creature that starts its turn in the webs or that enters them during its turn must make a Dexterity saving throw. On a failed save, the creature is restrained as long as it remains in the webs or until it breaks free.

A creature restrained by the webs can use its action to make a Strength check against your spell save DC. If it succeeds, it is no longer restrained.