Bullywug Death Lurker

Amphibious. The bullywug can breathe air and water.

Speak with Frogs and Toads. The bullywug can communicate simple concepts to frogs and toads when it speaks in Bullywug.

Swamp Camouflage. The bullywug has an advantage on Dexterity (Stealth) checks made to hide in swampy terrain.

Standing Leap. The bullywug's long jump is up to 20 feet and its high jump is up to 10 feet, with or without a running start

Malicious Killer: A Bullywug Death Lurker kills for fun. They often can be hired to kill people or monsters in exchange for the magical trinket, weapons, and or gems. They often have a cave they live in and store its goods.

Multiattack. The bullywug can make two melee attacks: with its sickle, knives, or bite. Can only bite once per turn. 

Monsterous Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:  (2d8 + 4) bludgeoning damage. Choose one:  Arm bite: The afflicted creature has to make a Constitution saving throw of 17 or drop their weapon. Face lunge:  The afflicted creature has to make a Dexterity saving throw of 17 or the creature get disadvantage on all attacks until its next turn. Leg Chomp:   The afflicted creature has to make a Constitution saving throw of 17 or suffered their movement being halved 

Sickle. Melee Weapon Attack:  +5  to hit, reach 5ft, one target. Hit: (3d6 +7) piercing damage. 

Dagger. Melee Weapon or Ranged Attack:  +5 to hit, reach 5 ft/ range 10/60, one target. hit(2d8 + 6) piercing damage. 

Halting Throw: As a reaction, the Death Lurker can fling a dagger at enemies once it turns and flees. This dagger acts as a normal one except once the creature it has to make a Constitution saving throw of 17 or else it stops moving and throws prone. This can only happen once per day.