Stone Camouflage. The grick has advantage on Dexterity (Stealth) checks made to hide in rocky terrain.
Multiattack. The grick makes one attack with its tentacles. If that attack hits, the grick can make one beak attack against the same target.
Tentacles. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 9 (2d6 + 2) slashing damage.
Beak. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage.
Damage Vulnerabilities. Radiant
Amorphous. The shadow can move through a space as narrow as 1 inch wide without squeezing.
Shadow Stealth. While in dim light or darkness, the shadow can take the Hide action as a bonus action.
Sunlight Weakness. While in sunlight, the shadow has disadvantage on attack rolls, ability checks, and saving throws.
Strength Drain. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 9 (2d6 + 2) necrotic damage, and the target's Strength score is reduced by 1d4. The target dies if this reduces its Strength to 0. Otherwise, the reduction lasts until the target finishes a short or long rest.
If a non-evil humanoid dies from this attack, a new shadow rises from the corpse 1d4 hours later.
Stench. Any creature that starts its turn within 5 feet of the ghast must succeed on a DC 10 Constitution saving throw or be poisoned until the start of its next turn. On a successful saving throw, the creature is immune to the ghast's Stench for 24 hours.
Turning Defiance. The ghast and any ghouls within 30 feet of it have advantage on saving throws against effects that turn undead.
Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one creature. Hit: 12 (2d8 + 3) piercing damage.
Claws. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage. If the target is a creature other than an undead, it must succeed on a DC 10 Constitution saving throw or be paralyzed for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.