Multiattack

The mordant snare makes one Bite attack and four Tentacle attacks, or it makes four Acid Spike attacks.

Bite

Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 17 (2d10 + 6) piercing damage plus 18 (4d8) acid damage.

Tentacle

Melee Weapon Attack: +11 to hit, reach 20 ft., one target. Hit: 15 (2d8 + 6) bludgeoning damage, and the target is grappled (escape DC 18) if it is a Large or smaller creature. The mordant snare has eleven tentacles, each of which can grapple only one target.

Acid Spike

Ranged Weapon Attack: +8 to hit, range 30/120 ft., one target. Hit: 10 (2d6 + 3) piercing damage plus 13 (3d8) acid damage.

Hidden Trap

While underground, the mordant snare covers itself in dirt, sand, or other material and lurks just below the surface. The mordant snare is indistinguishable from the ground around it while motionless and covered in this way. When a creature enters the mordant snare's space, the snare can make one Tentacle attack against the creature as a reaction, removing the covering material.