Ancient Hunts slight rework: Ancient Pearls

There's no motivation to fight mobs in ancient hunts and their certainly isn't motivation to clear bastions. To solve this, add an extremely rare drop called an ancient pearl which teleports you into a random ancient room (could be other ancients than the one(s) attracted). The pearl could drop from any mob, and would give motivation to explore for new mobs and to clear mobs in bastions. The mobs from bastions could also have an increased drop rate of the pearl. The pearls are risky to take but the payoff can be high.