Torgga is in the Refectory inspecting the library for loot together with Cefrey, Barton, and Haseid, while Mari patrols the antechamber and Andorn guards the Chapel Entrance. Barton and the others are instantly hostile to the party.
Your attack summons thorny vines that possibly Ensnare your target.
Ensnared creatures cannot move and take 1d6Piercing damage at the start of each turn. An ally can use their Help action to try and tear away the vines.