More commonly referred to as carnivorous coins, abroa are the bane of greedy thieves and treasure seeking adventurers alike. Appearing as tarnished, worn coins, these gold-, copper-, or silver-colored, disk-shaped monstrosities live out most of their existence in dormancy, awaiting prey to approach the pile of coins they call home.

When anything comes within range of their senses, the blind abroa will all awaken and lay in wait for their prey to approach. If they are handled or moved, the abroa will spring to action by extending their ten tiny, insect-like legs to swarm their victim. Once their prey has been engaged en masse, the abroa will bite into it with their small, hidden mandibles to inject the victim with a potent acid to break the prey down into a pile of melted flesh that their sensitive stomachs can digest.

Carnivorous coins can eat just about anything except wood, gems, and stone. They prefer organics, however, and will only eat precious metals if that’s all that is available. Their acids break the materials down until it is dissolved into a jelly-like substance that can then be digested. They need to eat roughly their weight every day or risk having to hibernate until sufficient food is available.

Thieves’ guilds and the like have been known to breed colonies of abroa to keep watch over their valuables. They will seed the treasure room with cheap coins for the creatures to feed upon. The actual valuables will be kept in wood or stone containers to keep them safe.