Eating monsters? Why, yes! Monster meat (and flesh) have special properties that vary a lot depending on the creature’s diet and habits when before you killed it. When you eat a monster (or a portion), roll d20 on the next table.
Note that stats are written for Into the Odd. WIL (Willpower) roughly equals WIS (Wisdom). Armour 1 means an armour denies one point of damage. A Full Rest is a week, or the time you need to recover all your hp. Impaired means all your attacks cause d4 Damage, in other games it can be Disadvantage or ignore all to-hit bonuses. Saves are what most games call roll under your ability as well as Saving Throws.
|1||STR and hp are restored|
|2||WIL is increased in 1 permanently|
|3||If you find a monster like the one you just ate, you can control it|
|4||On full moon, you transform in a monster like it|
|5||Lose all hp. After a Full Rest, your awake with an Armour 1 layer of nutshell hard skin|
|6||A week later, your claws grow and cause d4 damage; a year later, they cause d6 damage|
|7||You can’t recover after a Full Rest if you don’t eat or drink human or ape flesh or blood|
|8||Overnight, you grow a monkey-like tail|
|9||You’re blind! No, wait. Not blind. After a night’s sleep you can see ghosts and dead people|
|10||Your head changes into a dog’s head, d6 Bite. To talk, make a WIL save or start barking|
|11||Poisonous! Suffer d20 Damage|
|12||Same effect as being drunk. You are Impaired for the next 24 hours starting now|
|13||What’s that itching? Allergy? You scratch (choose where), now you have skeletal a part|
|14||Your legs become a bird’s legs. Your DEX saves related to movement and speed are +2|
|15||You wake up the next day covered in thick hirsute black hair|
|16||Your skin becomes blue, people think you’re cute|
|17||From now on, you must eat the flesh of monsters once a week or suffer d20 Damage|
|18||You can’t drink water again, it deals d10 Damage (and Impaired.) Blood, on the other hand|
|19||You can’t stand cooked meat, it must be raw. Eat and STR save or be Impaired for d4 days|
|20||Each morning WIL save or a parasite (and maybe the Referee) controls you for the day|
What else? Well, if you want, I mean if you really need to know what happens when an
idiot adventurer smokes a magic scroll (and of course you need to!), Tamás Kisbali has put together this very useful table.