Here we go…
Counterstrike #1. If an opponent the dragon warrior can see makes a melee attack against it while the dragon warrior is wielding a melee weapon, the dragon warrior ripostes that attack by using a bonus action or action from its next turn to make a melee attack with that weapon. In addition to the attack's normal effects, if the dragon warrior's melee attack roll is higher than its opponent's melee attack roll or a critical hit, the opponent's attack misses and does no damage.
If the dragon warrior counterstrikes with an action that makes more than one attack, such as Multiattack, the action's first melee attack occurs on its reaction when it ripostes, and the warrior's remaining melee attacks occur on its next turn.
Counterstrike #2. If an opponent the dragon warrior can see makes a melee attack against it while the dragon warrior is wielding a melee weapon, the dragon warrior ripostes that attack by using a bonus action or action from its next turn to make a melee attack with that weapon. In addition to the attack's normal effects, if the dragon warrior's melee attack roll is higher than its opponent's melee attack roll or a critical hit, the warrior parries the opponent's attack. If the parried attack hits the dragon warrior's AC, its damage is reduced by the counterstriking melee weapon's maximum damage, excluding any extra dice of elemental energy damage but including all other relevant modifiers. Thus, a longsword doing 1d10 + 1d4 + 4 slashing damage plus 1d6 fire damage provides 18 points of damage reduction on a successful parry.
If the dragon warrior counterstrikes with an action that makes more than one attack, such as Multiattack, the action's first melee attack occurs on its reaction when it ripostes, and the warrior's remaining melee attacks occur on its next turn.
Which do you prefer? I'm leaning slightly towards #1 as it's a bit simpler and the "parry" follows the standard rules better, since AC is an all-or-nothing affair in the core rules. Armour doesn't reduce or deflect damage, it either stops it entirely or does squat.
Oh, and I proposed the following tweak to Flashing Blades:
Flashing Blade (Bronze or Silver Dragon Warriors Only). The dragon warrior makes one melee attack with +2 added to the attack roll.
Flashing Blade (Gold Dragon Warriors Only). The dragon warrior makes one melee attack with +3 added to the attack roll.
I prefer not giving the Silver a +3 adjustment so its Flashing Blade is +9 to hit.
Been wondering where to use "longsword attack" instead of "melee attack" in the
Dragon Warrior Special Traits and Actions. We could change
Dragonscale Weapon Master to
Dragonscale Sword Master and change
Counterstrike,
Flashing Blade and
Multiattack so they are all longsword-only rather than refer to generic melee attacks.
It doesn't matter that much since the Dragon Warrior only has longsword attacks at the moment, but I guess there's a chance it'll lose its dragonscale longsword and have to pick up a normal weapon to defend itself, in which case using "longsword" instead of "melee" would drop its combat performance drastically as it couldn't use its
Flashing Blade and
Multiattack.
Hmm… never mind, I think I'd rather either leave it as is or make it a very minor change.
Perhaps:
Flashing Blade (Bronze or Silver Dragon Warriors Only). The dragon warrior makes one melee attack, with +2 to the attack roll if it is a longsword attack.
Flashing Blade (Gold Dragon Warriors Only). The dragon warrior makes one melee attack, with +3 to the attack roll if it is a longsword attack.
I keep on thinking I should use "dragonscale longsword" instead of "longsword" in many of these entries, particularly the action names, i.e. change an attack to
Dragonscale Longsword (Metallic Gold Dragon), but it seemed slightly questionable in 5E.
For example, a
Balor in 5E doesn't have
Flaming Sword or
Immolating Whip in its actions, but just
Longsword and
Whip despite neither of them being anything like normal weapons.
Still, not having "dragonscale" in some of these places itches me with a faint feeling of
wrongness.