Bone Goliath

Life drainer: Whenever the Bone Goliath deals necrotic damage, it heals for half of the damage dealt, rounded up.

Multi attack. the Bone Goliath Makes two attacks, one Pummel and one throw

Pummel. Melee Weapon Attack: +6 to hit, reach 10 ft., 2 targets. Hit: 10 (2d6 + 4) bludgeoning damage. On a hit, the target must make a DC 15 STR save, or fall prone

Throw. Ranged Weapon Attack: +6 to hit, range 45/60 ft., 1 target. Hit: 14 (3d6 + 4) bludgeoning damage. On hit the target must make a DC 14 Dex save or become restrained. The Bone Goliath takes 1d6+4 damage when they take the action

Necrotic Rebuke. When ever a creature casts a spell targeting the Bone Goliath It can use its reaction to make the creature make a DC 15 Con saving throw, taking 2d4 necrotic damage on a susses or half as much on a fail.