Calamity Titan (Ruined)

Siege Monster: Any damage done to buildings and structures is doubled.

Immobile: The Titan is buried under tons of sand, as such it cannot move, and any attempt at forced movement fails. It also automatically fails any dexterity saving throw.

Weak Armor: The Titan is old, and rusted. As such, if it, or any of its arms are attacked, and the attack is within 3 of their AC, but misses, it instead rips some of the armor off. If another creature attacks the Titan in the same spot as the previous creature, the AC is reduced by 3. This effect stacks. Affected areas can be repaired via the titans Self Repair Bonus Action.

Ancient Circuitry: The Titan has not received a direct source of electrical power in eons, as such, if it receives one now it’s treated like a jolt. If the Titan receives more than 10 points of lightning damage in a single round of combat, it’s circuits begin to fry, and it receives disadvantage on its first attack roll, and loses the ability to perform reactions. If it takes more than 20 points its self repair ability becomes less effective, now restoring only 1 AC. Both effects end when a new round of combat begins.

Sun-Baked: The Titan has been baking in the Sun for eons, as such it is a really high temperature, and doesn’t take well to colder temperatures. As such, if it is hit with 5 or more cold damage, the point of contact is considered damaged, and takes one stack of Weak Armor (-3 AC) at that point.

Sandstorm: When The Titan uses its Large Hand attack, it kicks up a large sandstorm, which lasts for 3 turns. It covers an area of 200 ft. and any creatures caught within it must make a Constitution saving throw, or be knocked prone by the intense winds. During the sandstorm, all terrain is considered roughX and all rough is considered impossible to pass through

Separate Cores: Every Limb of the Titan has a core of its own, and therefore can be taken out separately. Of a Small Arm is destroyed, the Titan loses an attack, if the laser canon is destroyed, the Titan loses its Laser Canon Action, and if th large arm is destroyed, the Titan loses its Large Arm Attack and its Sandstorm Feature.: All three small Arms have an AC of 20 and 100 HP each,  the Laser Canon has an AC of 18 and 60 HP, and the Large Arm has an AC of 22 and 150 HP.

Built- In Ladders: The Titan has ladders that may be used to climb it with a successful Athletics or Acrobatics check (DC 14), once this check is made the creature may freely climb the Titan until it dismounts it, at which point the check must be performed again. If a creature is on the Titan, it immediately becomes the prime target of attacks. If it is hit while it is climbing the Titan, it must succeed on a Dexterity save (DC 16) or fall off of the Titan, taking the appropriate fall damage. If it reaches the top of its head, it may attack the laser canon, potentially jamming it, and destroying it.

Large Hand. Melee Weapon Attack:  30 ft. radius, reach 60 ft., any number of targets caught within radius. Hit: 202 (101d4) [bludgeoning] . This attack takes 2 actions to execute, and the area of impact is shown on the map. After this action is used, the Titan is unable to use it for 3 turns.

Small Hands Attack. Melee Weapon Attacks: +6 to hit, reach 60ft., 1 target. Hit:  10 (2d6 + 4) [bludgeoning] damage. When it takes this action, it attacks 3 times, however, if an arm is out of commission, the attack number is reduced accordingly. 

Laser Cannon. Ranged Weapon Attack: +7 to hit, range 60/120 ft., 1 target. Hit: 8(2d8) [fire] damage, and 4 [force] damage. When the laser hits, it explodes in a 20 ft. Sphere, anyone caught within must make a Dexterity Saving throw (DC 15) or take d6 of fire damage, 1 force damage, and be pushed back 15 ft. Once this action is used, it may not be used for another 2 turns.

Siesmic Sweep. Melee Weapon Attack: reach 60ft. cone, as many targets as are inside of the cone: Save: 15 Dexterity. Fail: 14 (2d8+6) [bludgeoning] damage. Success: Half damage 

Self Repair: The Titan regains 3 AC, if it has lost any. If it has not lost any AC, this effect is not applied. 

Reactions: 

Attack of Opportunity (Small Hand Strike x1)

The Titan has access to Legendary Actions. It possess 1 Legendary Action, which it may use at the end of any player turn! It may utilize the following actions:

It may unleash its Laser Attack, provided it is recharged and ready.

It may do a regular Small Hand attack.

Legendary actions are re-charged at the start of its turn, any unspent legendary actions are lost.