Titanic

you have gained knowledge of the mechanics to construct a titan, the way you obtained this knowledge is up to you and your DM. You could have learned from an insane artificer, found an alien relic, or gained knowledge of technology from another universe. this allows you to construct a large mechanical suit which you  can wear in battle to defend yourself, or increase your offensive capabilities.

Titanic Construct

once per day, as an action you can construct a titan, a titan is a large, mechanical suit that looks vaguely humanoid, but its specifics are up to you as the user

while in the titan you gain the following benefits

your strength increases by 4 to a max of 22

you gain temp hp equal to 5 times your fighter level, if you lose all of these temporary hit points your titan is destroyed

the titan has 2 options for weapons you choose one of the following when you gain this feature

ballista: range60/120 1d10 piercing damage, strength based

slam: melee attack 2d6 damage

your titan has 2 options for chases, you choose this when you gain the ability

ranger: your movement speed increases by 10ft while in your titan

juggernaut: your ac increases by 1 while in your titan

 

the titan is a large construct that uses your stats aside from its hitpoints, which are equal to the temp hp listed above

 

Titanic Augmentation

your strength bonus while in your titan can now increase your strength to 24

 

your titans attacks now count as magical for the purpose of overcoming resistance to non-magical attacks

 

you can now exit your titan and command it as another creature. in combat the titan shares a turn with you and you can use your action to have it make attacks, its hitpoints equal the temp hp you have from summoning it

 

you decide if your titan has a personality of its own.

titanic reconstruction

you can now summon your titan twice per day, and can use your second wind feature to fix an injured titan.

Improved arsonal

your titan gains powerful augmentations to its attacks

Ballista: now does an additional 1d10 force or fire damage, your choice

 

slam: does an additional 2d6. lightning or cold damage, your choice

Titanic Mastery

while in your titan your strength is now increased by 6 to a maximum of 26

your titan is now a huge construct

your titan gains resistance to non magical bludgeoning piercing and slashing damage

while in your titan you can use an action and choose to detonate it you are ejected and fall to the ground taking no damage at the beginning of your next turn, any creatures within 30ft of your titan must make a dexterity saving throw dc15 taking damage equal to the titans max hp, or half as much on a successful one, once you use this action you cannot summon a new titan for 1 minute