From OSE SRD
Magical, armadillo-like creatures with long tails and two long, antennae-like feelers. Feed on rusted metal.
|Armour Class||2 |
|Hit Dice||5 (22hp)|
|Attacks||1 × feeler (rusting)|
|Saving Throws||D12 W13 P14 B15 S16 (3)|
|Number Appearing||1d4 (1d4)|
- Rusting: Metal that touches a rust monster (e.g. weapons that hit it, or armour struck by a feeler) crumbles instantly to rust. Magic items have a 10% chance per “plus”, to be unaffected on each successful hit. Each time a magic item is affected, it loses one “plus”.
- Smell metal: Attracted by the scent.