Pearl of the Drowned God (Hakkarl house relic)
Power: A pearl held within a clam. When the pearl is thrown at an enemy, it crushes their armor and shield on impact, rendering it useless. The pearl has 1 charge and is recharged when placed back into the clam. The clam must be carried by another user or left at respawn if no one is to carry it.
The pearl was found when Two-legged Rollo went for a midnight swim. There are stories that Rollo, himself, would hurl the pearl like a trebuchet and crack the hulls of rival ships in two.