Coin Purse-eater Ooze

Amorphous. The ooze can move through a space as narrow as 1 inch wide without squeezing. 

False Appearance. While the ooze remains motionless, it is indistinguishable from an ordinary copper, silver or gold coin (depending on its age) unless an observer succeeds on a DC 13 Intelligence (Arcana) check. 

Insatiable Greed. The purse-eater ooze can sense the presence of copper, silver or gold coins within 100ft of itself. It can determine the location of the type of metal that corresponds to its colour and its direction, though not quantity. It cannot locate the metal if any thickness of clay or lead, even a thin sheet, blocks a direct path between it and the gold.

Picky Eater.  The purse-eater ooze will only eat coin-sized portions of the metal that corresponds to its colour and will defer from eating any other available metal. It will take the ooze 1 minute to consume and digest one coin piece. After consuming 1 hour's worth of coins, or until it has consumed all available coins if the total amount is less that 60, it will attempt to leave the area or container. If in a pocket, it may attempt to fall out whilst in its coin form. If the carrier of the ooze is amongst their party members or other bystanders, the ooze will have to succeed on a Dexterity (Stealth) check against Passive Perception in order to escape undetected.  

The Colours of Age. A purse-eater ooze's colour and its taste for specific metal change as it ages, going from least precious to precious. 

Copper- 1 month or less

Silver- 1 - 3 months 

Gold- 3 - 6 months 

Platinum- 6 months or more

Pseudopod. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 3 (1d6) bludgeoning damage plus 7 (2d6) acid damage.