Blood-crazed Giant

Adamantine Plate. The giant does not take the extra damage by being hit with a critical attack.

Blood Tracking. The giant can sense a creature who is not undead or a construct that has been reduced to half of its hit points or less within 1 mile. When fighting a creature that has been reduced to half of its hit points or less, the giant has advantage on all attacks against the creature. 

Blood for the Blood-God! The giant gains 15 temporary hit-points at the start of each of its turns.

Multiattack. The Blood-crazed Giant can make two greataxe attacks.

Greataxe. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 18 (2d10 + 6) slashing damage. 

Aggressive. As a bonus action, the giant can move up to its speed toward a hostile creature that it can see.

Greataxe. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 20 (2d12 + 6) slashing damage. 

Bloody Repose. If a creature with half of its hit points or less misses a melee attack against the giant, the giant makes one attack against the target with its greataxe if they are within range.