Oliver Quarlic with his fellow Gur, all members of a group of monster hunters lead by Ulma, are looking for their children. The kids have been kidnapped by Cazador's spawn, and the nomads have camped in Rivington trying to mount a rescue or seek revenge.
Involvement
Oliver Quarlic along with other Gur can be found in the Gur Camp attending a funeral for the fallen from a recent offence on Cazador's palace. Their leader Ulma will ask the party to help in defeating Cazador and discovering the fate of their stolen children.
Once Cazador is defeated, Oliver Quarlic, along with Ulma and the other Gur can be found near the waypoint in Cazador's Dungeon. He will attack the party if the ritual held in the dungeons was completed.
Act 3 Spoilers! This section reveals details about the story of Baldur's Gate 3.
If Astarion had been turned in to Gandrel in the Act One and kidnapped, then at the Act Three Oliver along with all his fellow Gur (except Gandrel) will be dead.
Normal weapon damage
Your attack summons thorny vines, dealing Weapon Damage and possibly Ensnaring 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.
Act 3 Spoilers! This section reveals details about the story of Baldur's Gate 3.
