Conquest + Scorn

Legendary Resistance, 3/6 days

Action Surge, One extra action

The Red Mist, To hit: (2d8 + 10) 

Half the damage you do on your turn is storied up as (blood well) at the start of each turn you lose 2D20 blood well

Draining aura, Consume all blood well and release it as damage in a 30ft radius bleeding damage, each creature within the range must make a con save or take full damage, half on a pass 

Blood well consume, take half of the current blood well as temp. hit points. this consumes all blood well. after one min you take the remaining temp hp as damage

the best defence is offence. target must make a con save after being hit (dc 14), on fail their AC is dropped by 1 for the rest of the battle

Extra Attack.  

Fodder. if there are allies within 60 feet of conquest he can use his reaction to throw them in front of the oncoming attack, will count as uncanny evasion if its a save

Choke. The target must make a dc 25 con save or be restrained until conquest releases them or they break free. during the restrain they are suffocating and will die in x number of turns = to their con mod

Conquest has 5 legendary actions

Shift (costs 1), Conquest can teleport 20 ft away

Crippling Blow ( costs 2),  Conquest makes a normal attack and the target must make a con or dex save (dc16) or have their movement reduced to 0

Lacerating Blow ( costs 2), Conquest makes a normal attack and the target must make a con save (dc 18) or begin to bleed out taking 4d6 at the start of their turn.

Perfect Defence (costs 4), Conquest spins the trident around him at mind-blowing speeds making it almost impossible to find an opening paired with his mind-reading skills he can make an opportunity of attack whenever someone steps in or out of his attack range, (he is not limited to one OA)

When Conquest is summoned, if his HP is reduced to 0 he gains 1 Hp and takes his turn immediately, and is forced to use the action below 

My Time Is up. Conquest floats up into the air, as he gets sucked up by The Scorn Of Humanity and is consumed giving it some buffs