Bite Attack. Melee Weapon Attack: +5 to hit, one target. Hit: 14 (3d6+3) piercing damage.
Tail Attack. Melee Weapon Attack: +5 to hit, one target. Hit: 14 (2d10+2) bludgeoning damage. If the tail is holding a rock and the target is a creature, it must succeed on a DC 13 Strength saving throw or be knocked prone.
Tail Rock. Ranged Weapon Attack: +2 to hit, reach 10 ft., one target. Hit: 12 (2d10 ) bludgeoning damage. If the target is a creature, it must succeed on a DC 13 Strength saving throw or be knocked prone. This attack cannot be made again until the Ankyloslime finds a suitable rock to be thrown.
Description
Ankyloslime are five feet tall and seem to be dripping, otherwise they have the same appearance as an ankylosaurus. They can throw their tail over their heads to dislodge the stone at the end at a target.
How to make it more dangerous: make it a shapeless armored blob with the power to make several tail club pseudopods at once