Martial Archetype
Honour Bound
Honour bound fighters often belong belong to caste of warriors who follow a strict dictum or codex of rules. While many honour bound warrior serve to protect the laws and traditions of the land, others have also been known to cast their formal masters behind them to live by a different ruleset, one of freedom or villainy.
Strength Before Death
As an honour bound fighter, your sheer fighting spirit can delay the grasp of death.
If you take damage that reduces you to 0 hit points and doesn’t kill you outright, you can use your reaction to delay falling unconscious, and you can immediately take an extra turn, interrupting the current turn.
While you have 0 hit points during your extra turn, taking damage causes death saving throw failures as normal, and three death saving throw failures can still kill you. When the extra turn ends, you fall unconscious if you still have 0 hit points.
Once you use this feature, you can’t use it again until you finish a long rest.
Fighting Spirit
When you use your Second wind, you also have advantage on all weapon attack rolls until the end of your turn.
Studied attack
Starting at 10th level, you can masterfully study your opponents and learn from each attack you make. If you make a weapon attack roll against a creature and miss, you have advantage on your next weapon attack roll against that creature before the end of your turn.
Rapid Strike
Beginning at 15th level, you learn to trade accuracy for swift strikes. If you take the attack action on your turn and have advantage on an attack roll against one of the targets, you can forgo the advantage for that roll to make an additional weapon attack against that target, as part of the same action.
You can only benefit from this feature once on each of your turns.