During the The High Harper quest, the party can go to the Counting House in hopes of catching up to Minsc. Inside the vaults, the party witnesses Minsc emerge from a Mimic and defeat it. 'Jaheira' then appears with a handful of Bhaalists including Grice, and teleports away with Minsc, leaving the cultists to attack the party and the staff.
Throw a shard of ice that deals 1d10Piercing damage. It explodes and deals 2d6Cold damage to anyone nearby. It leaves an Ice surface. On miss, the shard of ice still explodes.