Glass Gator

Amphibious. The glass gator can breathe air and water.

Constricting Lunge. If the glass gator jumps at least 10 feet straight toward a target and then hits it with a Claw attack on the same turn, the target must succeed on a DC 12 Strength saving throw or be knocked prone. If the target is prone, the gator can make one Constrict attack against it as a bonus action.

Standing Leap. The glass gator's long jump is up to 15 feet and its high jump is up to 10 feet, with or without a running start.

Transparent. The glass gator has advantage on Dexterity (Stealth) checks made to hide while underwater or in dim light.

Claw. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 9 (2d6 + 2) slashing damage.

Constrict. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 5 (1d6 + 2) bludgeoning damage, and the target is grappled (escape DC 12). Until the grapple ends, the target is restrained and takes 5 (2d4) poison damage at the start of each of its turns, and the glass gator can't use Constrict on another target.

Silt Cloud (Recharges after a Short or Long Rest). When it takes damage while underwater and within 5 feet of the bottom of a body of water, the glass gator stirs up a 10-foot-radius sphere of silt centered on it. The silt spreads around corners, and its area is heavily obscured. It lasts for 1 minute or until a strong current disperses it. The glass gator can then swim up to half its speed. The cloud of silt doesn't move with the glass gator.