Attack Titan

When the Titan hits zero hit points, the titans body falls causing massive area damage. Any creature with a size smaller than giant takes 5d10 force damage. Also the titans body dissappears in a cloud of steam, a 50 ft radius around the titans body becomes heavily obscured as the body dissolves. Anyone in this range essentially suffers from the blinded condition.

The titan gets advantage on strength checks for anything it's size or smaller and has +14 to strength checks involving grapples 

 Titan scream: As a bonus action the titan can let out a glass shattering scream and every creature within 100 ft must make a DC18 charisma saving throw or be frightened of the titan.

Multiattack. The titan makes three attack actions

Punch. Melee attack: +18 to hit 3d10+10 Range 20 ft on a hit the target needs to a strength saving throw based on its size or be knocked back and prone 20ft. Gargantuan= 10  Huge= 15  Large= 20  any size smaller fails instantly

Rock. Ranged Weapon Attack: +13 to hit, range 60/240 ft., one target. Hit: 30 (4d10 + 8) bludgeoning damage.

Kick. Melee attack + 14 to hit 5d10+20 Range 30ft  Same effects as punch but add 5 to the DC's

Grapple. The titan attempts to grapple an opponent 

Bite. Melee attack, range 10 feet +12 to hit, +20 if the target of the attack is grappled. 10d8+45 damage target also takes an additional 30 bleed damage at the start of its turn for 3 turns. Enemies of the medium size or smaller have to make a DC17 con save or die instantly from beheading.

Crystal/Harden: as a free action the titan can harden its fists and legs with crystals giving itself +45 damage to attacks and changing the damage type to magical piercing and Slashing. Does not apply to the bite attack

When targeted for an attack the titan will form extremely tough crystals on its skin, raising its AC by 3 and gaining 40 temporary hitpoints. This reaction can be used up to 4 times per titan form

Taunt: during an opponents turn the titan can scream to draw an enemy's attention. Until the end of the titans next turn all enemy's must attack the titan if able.