When determining your characters ability scores, Decrease your strength score by 2, to a maximum of 8, and increase two other ability scores by 2 each.

Grungs mature to adulthood in a single year, but have been known to live up to 50 years.

You have proficiency in the Perception skill.

Miniscule Grung stand between 1 and 2 feet tall, and average about 6 pounds. Your size is Tiny.

You have a walking speed of 20 feet. Your sticky finger and toe pads give you a climb speed of 20 feet.

You can breathe air and water.

You have resistance to poison damage, and have advantage on saving throws against poison.

Any creature that grapples you or otherwise comes into direct contact with your skin must succeed on a DC 12 Constitution saving throw or become poisoned for 1 minute. A poisoned creature no longer in direct contact with you can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

• You can also apply this poison to any piercing weapon as part of an attack with that weapon, if it hits, the attack deals an extra 2d4 poison damage. You can use this ability a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

Your long jump is up to 20 feet and your high jump is up to 10 feet, with or without a running start.

If you fail to immerse yourself in water for at least 1 hour during a day, you suffer 1 level of exhaustion at the end of that day. You can recover from this exhaustion only through magic or by immersing yourself in water for at least 1 hour.

You can speak, read, and write Common and Grung

Because of your small size, you carry certain advantages throughout your adventures. The benefits of being a tiny creature are:

• You gain a +1 bonus to your Armor Class
• You may add your proficiency bonus an additional time when you use the hide action.
• When you use a weapon with the versatile property, you can treat the weapon as if it has finesse.
• You can move unhindered through, or occupy the same space as an ally, as long as their size is medium or larger. This does not provide benefits such as sneak attack, if either you, or your ally is a rogue.
• You can move through the space of an opponent, as long as their size is medium or lager. The space counts as difficult terrain.
• You can mount your allies, as long as their size is medium or larger. It costs half your movement to mount.

Because of your small size, you have certain disadvantages. The weaknesses of being a tiny creature are:

• Your strength score is limited to a maximum of 8.
• Your weapons deal less damage. The damage dice of any weapon you use are decreased by one, to a minimum of 1d4. A magical weapon can negate this downside. A shortsword would deal 1d4 instead of 1d6.
• The range of any ranged weapon you use is halved.
• If a weapon would normally have the reach property, it doesnt for you.
• You can only grapple tiny and small creatures.