Venpamden

Overview
These monstrous frog-like creatures roam the sands of the Daraus Desert in Galken. They are toxic lurking predators that trick prey to approach with mirage clouds of gas and pools of mercury that appears as shimmering puddles of water. When anything gets near the venpamden, it leaps quickly trying to consume whatever is in range of it. Venpamden have 4 limbs that they can stretch like fins, attached to each limb is a cilia-like appendage that they can use to sense nearby prey.

Leapby
The Venpamden doesn't provoke attack of opportunities when using its leap movement speed.

Submerge
As an action, the Venpamden can submerge. The Venpamden remains submerged until it makes another action. While submerged the Venpamden gains 3-Quarters-Cover. Additionally, it can use a bonus action to attempt to hide.

Mirage Cloud
As an action the Venpamden emits a shifting cloud of gas in a 20ft radius. Creatures inside the cloud have partial cover. Creatures with blind sense or tremor sense can sense through the partial cover the cloud provides. A creature can perceive through the Mirage Cloud by beating a dc 15 wisdom (percpetion) check.

Multiattack
The venpamden moves propelling itself with two appendages to leap. The Venpamden is then able to make 3 attacks, one bite and two limb attacks. If a Venpamden doesn't move on its turn, it can make 4 limb attacks.

Bite
'''+6 to hit. 5ft range. One target. On hit deals 11 (3d6+2) piercing damage.''' Any creature hit by the bite attack is grappled (escaped dc 16). The creature must also succeed on a dc 14 constitution saving throw or be poisoned for a minute. Until this grapple ends the creature is restrained, and the Venpamden can't constrict another target.

Cilia Limb
'''+8 to hit. 15ft reach. One target. On hit deals 9 (1d10+4) bludgeoning damage.'''