Astrion

Limited Imortalety (2/turn): If Astrions hit points would be reduced to 0 he can make a Death Strike attack instead. He then regains hit points equal to the damage he has dealt with his Death Strike attack.

Unbreakable: If Astrion takes 15 damage or less from one attack he takes none instead. Additionally any effect that would reduce his hit points to 0 or out right kill him instead reduces his hit points to 1. A creature reducing Astrions hit points to 0 does not gain the option to kill him. 

Regeneration: Astrion regains 20 hit points at the start of each of his turns. This regeneration does not occur if Astrions is dead.

Unlimeted Potential: Astrions Strength increases by 1 at the start of each of his turns. If Astrions Strength exceeds 30 he takes a number of d8s of force damage equal to the difference between 30 and his Strength score at the start of each of his turns.

Multiattack: Astrion makes 3 melee weapon attacks or 2 ranged weapon attacks.

Longbow. Ranged Weapon Attack: +13 to hit, reach 120/600 ft., one target. Hit: : 16 (2d8+7) pricing damage.

Incredible Throw. Ranged Weapon Attack: +11 to hit, reach 40/120 ft., one target. Hit: 12 (2d6+5) Bludgeoning damage.

Unarmed Strike. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: : 8 Bludgeoning damage.

Longsword. Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 17 (2d8+8) slashing damage. If this attack deals 25 or more damage Astrion can move up to 15ft without provoke opportunity attacks.

Death Strike. always hits, melee spell attack, reach 50 ft., one target. Hit: 19 (2d8+10) Bludgeoning damage. This attack deals 1d8 more damage for every time this attack has been used. This attack does not deal any damage if it is not used with the Limited Immortality ability.

Astrion can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. Astrion regains spent legendary actions at the start of its turn.

Longsword( Cost 2 Actions): Astrion makes a Longsword attack.

Unarmed Strike (Cost 1 Action): Astrion uses the Unarmed Strike action as a Legendary Action.

Increased Groth (Cost 3 Actions): Astarion raises his Strength Score by 1 to a Limit of 30.

If Astrions hit points are below 329 he take the following Legendary Actions.. Additionally he can take 2 more Legendary Actions. Astrion regains spending Legendary Actions at the start of his turn.

Strengh Boost (Cost 4 Actions): Astarion raises his Strengh Score by 1 to a Limit of 40.

Contain Strengh (Cost 5 Actions): Astrion becomes immune to force damage at the start of his next turn. This immunity lasts until the end of Astrions turn.