Regeneration:At the start of every turn, regen 1d10 + con modifier HP.
Boros bypasses immunity to bludgeoning and force damage.
Standard punch:A regular punch that deals 1d10 + 18 bludgeoning damage. +10 to hit.
Strong hit:A melee attack that deals 2d10 + 20 bludgeoning damage. +10 to hit. On a failed con saving throw, be launched 100 feet in one direction. Save DC = 20
Consecutive strikes:A flurry of strikes unleashed in quick succession. Deals 7d8 + 10 bludgeoning damage. +15 to hit.
Disintegrate:Fires a large blue beam from his chest that can disintegrate even the bones of whatever it hits. Deals 10d6 +40 Force damage. DEX save DC = 24
Boros has 10 legendary actions.
Insane regeneration:cost 1 legendary action. Boros instantly heals himself to max hp, even if at 0 hp. (unless meteoric burst or collapsing star roaring cannon kills him.)
Meteoric burst:Costs 2 legendary actions. Boros unleashes his full power, doubling his strength, dex and increasing his movement speed to 120 Ft. But it deals 5d20 necrotic damage at the start of every turn.
Collapsing star roaring cannon:5 legendary actions. Boros charges up one final attack, a beam so powerful it's said to be able to destory the surface of the planet. 50D10 + 50 Force damage. Brings boros to 0HP afterwards. uses Wisdom as their modifier. Dex save = 24. On success, take half damage.