So I was looking at the critters from Fantastic Beasts and Where to Find Them and found this little gem:
I'm still not up on my 5e yet, so I decided to convert this to 3.5. I wish I had a contributor name for the Niffler. I couldn't find one on the site.
I used the description of the Niffler from these sites as well: https://www.pottermore.com/book-extr...t-is-a-niffler and https://harrypotter.fandom.com/wiki/Niffler to be as accurate as possible.
Although small and cute, the niffler can be quite destructive in its pursuit of sparkly things.
Tiny Magical Beast
Hit Dice: 1d10+2 (7 hp)
Initiative: +2 (+2 Dex)
Speed: 20 ft..; Burrow 30 ft.
Armor Class: 14 (+2 Dex, +2 Size), touch 14, flat-footed 12
Attack: Bite + 5 melee (1d4-2)
Full Attack: Bite + 5 melee (1d4-2)
Space/Reach: 1 ft./0 ft.
Special Attacks: —
Special Qualities: Expansive pouch, darkvision 60 ft., low-light vision, overstuffed, treasure sense
Saves: Fort +3, Ref +4, Will +1
Abilities: Str 6, Dex 14, Con 12, Int 3, Wis 12, Cha 10
Skills: Hide+12 (+14 underground), Spot + 5 (+7 to spot shiny objects and treasure)
Feats: RunB Weapon Finesse)
Environment: Any Temperate land
Organization: Solitary, pair or family (2 adult nifflers and 6-8 young)
Challenge Rating: 1/4
Treasure: Triple Standard (coins and shiny objects only)
Alignment: Always Neutral
Advancement: 2-3 HD (Small)
Level Adjustment: —
Although gentle by nature and even affectionate towards their owners, nifflers can be destructive when looking for sparkly objects. If provoked, they have a nasty bite.
A niffler is a rodent-like creature with a long snout similar to that of a platypus and has a coat of black, fluffy fur. They live in burrows as deep as twenty feet below ground, and produce six to eight young in a single litter. A niffler can burrow through dirt and rock quickly, making them difficult to catch.
Nifflers have a pouch on their bellies which holds far more than seems possible, similar to a bag of holding.
Expansive Pouch (Su): The niffler’s belly pouch is voluminous and can hold a surprising amount of stolen goods which the creatures will attempt to bring back to their nests. These pouches are able to contain up to 25 pounds of material taking up 3 feet by 3 feet worth of space.
Overstuffed (Ex): Whenever a niffler takes damage, a number of valuables fall out of its pouch. Consult the table below to roll for a sample of what a niffler could have in its pouch. Once all its items have dropped, the pouch is empty. The niffler will have to steal more items to refill its pouch.
Sample Random Niffler Treasure Drop Table
- Between 8 and 12 gold coins spill out of the niffler’s pouch rolling in all directions.
- 3 gems worth 500 gold pieces each fall out of the niffler’s pouch.
- A solid gold bar falls out of the niffler’s pouch with a loud clatter. Any creature within 35 ft. that succeeds on a Listen check (DC 10) will hear the noise.
- Several very shiny but worthless buttons roll out of the niffler’s pouch.
- An animated golden bust of a very tired looking wizards falls out of the niffler’s pouch with a loud bang. The bust begins shouting at the niffler and anyone else it sees.
- A tiara and several small rings worth 25 gold pieces each fall out of the niffler’s pouch.
- A gaudy necklace worth 1,000 gp spills partway out of the niffler’s pouch; seeing this the little creature stops and tries to stuff the necklace back into its pouch.
- 1d12 silver coins fall out of the niffler’s pouch rolling in all directions.
- A crystal ball falls out the niffler’s pouch, unless caught it hits the ground and shatters.
- A set of small silver salt and pepper shakers made in the likeness of swans fall out of the niffler’s pouch and take flight.
Treasure Sense (Ex): Nifflers sense the presence of material wealth with dragon-like precision within 30 feet. This ability functions as Scent, except it can detect only precious metals (copper, silver, electrum, gold, platinum and adamantine) and gems.
Skills: A niffler has a +2 racial bonus on Spot checks to spot shiny objects and treasures. It also has a +2 racial bonus to Hide underground as their dark fur blends into the surroundings. A niffler can tunnel through dirt and rock but cannot charge or run while burrowing.
NIFFLERS AS FAMILIARS
Nifflers are easily distracted by shiny objects and are notorious kleptomaniacs when treasure is involved. As such, these do not make for ideal familiars. If you have the Improved Familiar feat, you may gain a niffler as a familiar. Master gains +3 on the Sleight of Hand checks.
 updated treasuresense.