Your creature type is Humanoid

Your strength score increases by 2 and one ability score of your choice increases by 1.

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

Bullywugs grow when they level. Your starting size is Small and increases to Medium at 5th level and Large at 10th level.

Your base walking speed is 25ft, you have a climbing speed of 25ft and your swimspeed is 25ft.

Most Bullywugs are chaotic, they thrive on violence and only respect strength. Their social hierarchy usually revolves around pledging themselves too the Bullywug they're scared of most.
They tend toward evil as well, coming from a culture where social advancement occurs rarely,  only the most ruthless and cunning survive till adulthood.

You can breathe air and water.

You can communicate simple concepts to Toads & Frogs when speaking Bullywug and have advantage on Animal Handling checks and Persuasion when interacting with them.

Your long jump is up to 25 feet and your high jump is up to 15 feet, with or without a running start.
Gain advantage on Acrobatics checks related to jumping.

You can use your bonus action to start croaking a war chant in your native tongue. Up to 3 friendly creatures within 60ft that can understand Bullywug fall into a war frenzy and have advantage on their next attack roll.

If used on a Froghemoth it must make a DC14 Wisdom saving throw or be charmed by you for 1 hour. While charmed it regards you as friendly ally and a loyal friend.

3 uses per long rest, can't be used if the Bullywug is unable to use its mouth or make sound.

Bullywugs worship and revere Froghemoths.
When you start your turn in eyesight of a hostile Froghemoth or anything you would perceive as such make a DC20 Wisdom saving throw, on a failure you are frightened. You can repeat the saving throw at the end of your turn.
If you succeed on the saving throw you're immune to this effect for 24 hours.

Bullywugs pride themselves on their powerful bites. You can use your mouth to make a Bite Attack. When you hit with it, the Bite deals 1d6 + your Strength modifier piercing damage.
Damage increases too 1d8 at 5th level, 1d12 at 10th level.

IUsing a full action you can Bullywug Bite a creature grappled by your tongue, n hit the target is swallowed if it is one size smaller or more..  A swallowed creature is blinded and restrained, has total cover against attacks and other effects outside the Bullywug, and takes 1d8 acid damage (2d8 when large) at the start of each of its turns..
The Bullywugs gullet can hold up to two creatures at a time. If the Bullywug takes 20% of its hitpoints in damage or more on a single turn from a creature inside it, the Bullywug must succeed on a DC 20 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, each of which falls prone in a space within 5 feet of the Bullywug.

A Bullywugs mouth is one of its most versatile tools.
Your tongue has a 10ft(15 when large) reach. On your turn you can use a bonus action to attempt to grapple one creature within range. The target must be within your tongue range and no more than one size larger than you. Unless it succeeds on a Strength saving throw DC equal to 8 + proficiency bonus + your strength modifier the target is grappled and is pulled into an unoccupied space 5ft away from you.

If a creature is already grappled this way, you can use your Bullywug Bite attack to swallow it.

If you fail to immerse yourself in water for at least 2 hours during a day, you suffer one level of exhaustion at the end of that day. You can only recover from this exhaustion through magic or by immersing yourself in water for at least 2 hours.

For every point of exhaustion gained this way roll a 1d6 if the result is 3 or lower they take a random trait from the Indefinite Madness table.

You can speak, read, and write Bullywug.