Multiattack

The ruby ooze makes two pseudopod attacks.

Pseudopod

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 9 (2d6 + 2) bludgeoning damage plus 14 (4d6) acid damage.

Acid Spray (Recharge 5-6)

The ooze sprays its bright red protoplasm in a 20-foot line that is 5 feet wide. Each creature in that line must make a DC 15 Dexterity saving throw. On a failure, the creature takes 21 (6d6) acid damage and is restrained as its flesh begins to turn into a translucent ruby-like stone. On a success, the creature takes half the damage and isn't restrained. The restrained creature must make a DC 15 Constitution saving throw at the end of its next turn, taking 21 (6d6) acid damage and becoming petrified on a failure or ending the effect on a success.