Berserker Dragon

Bloodied Frenzy. While Bloodied, the berserker has Advantage on attack rolls and saving throws.

Huge Power. after The dragon has taken 1d20 damage by anything they will regain 1d20 and there next attack has advantage.(once per round)

Hellish power house. The dragon can choose to give up a bonus action to take another action and vice versa (once per round).

Evil Being. All none evil creatures must make a WIS saving throw of 18+ or be frightened

Blood boiler. all within a 150 mile radius must make a STR saving throw of 18+ or take [roll]1d8[/roll] Fire damage.

Wing Attack. 1d20 Attack: [roll]1d20[/roll] Damage: [roll](if([roll:-1:critical], =0, 1d20, 2{1d20}.expand()))[/roll] force damage and be pushed back 15 feet.

Claw Of Blood.Make a DEX saving throw if lower then 17+ take Attack: [roll]1d20[/roll] Damage: [roll](if([roll:-1:critical], =0, 2d20, 2{2d20}.expand()))[/roll] damage

Blaze of hell fire. Attack: [roll]1d20[/roll] Damage: [roll](if([roll:-1:critical], =0, 4d12, 2{4d12}.expand()))[/roll] if you fail a 17+ wisdom saving throw.

Blood Fury. The Dragon takes [roll]5d10[/roll] damage and then can choose one creature to spit its acid blood at doing Attack: [roll]1d20ad[/roll] Damage: [roll](if([roll:-1:critical], =0, 5d12, 2{5d12}.expand()))[/roll] if the monster has a STR lower than 15+

Dragons Blood. Once this dragon is defeated it can choose to revive itself at 10 hp and give itself invincibility for one round but if the dragon can not use bonus actions in this state.