Would a race with bludgeoning, piercing or slashing resistance be overpowered?

The various subtypes of dragonborn in D&D 5e have different elemental resistances (acid, cold, fire, lightning, poison). Tieflings similarly have fire resistance, and I would estimate that a variant tiefling with, say, cold or poison resistance instead would be equally balanced.

However, suppose I want to give a race resistance to one of the physical types: bludgeoning, piercing, or slashing. For example, a dragonborn subtype with slashing as its one resistance, or a tiefling with piercing resistance.

Would this be overpowered?

How can I gain resistance to piercing, bludgeoning, and slashing damage while in heavy armor?

I am theory-crafting a character that takes very little damage. I want to use the Heavy Armor Master feat to help with damage reduction from non-magical attacks, as well as the Battlemaster maneuver parry, and the Goliath feature stone’s endurance. How can I gain resistance to piercing, bludgeoning, and slashing while also using the Heavy Armor Master feat? I am most interested in answers that don’t depend on external sources, such as other characters and magic items, but I’d like to hear answers including those as well. Multi-classing is an option.

Arcane Archer’s Piercing Arrow on Larger Enemies

One of the Arcane Shot options for the Arcane Archer fighter (from Xanathar’s Guide to Everything, p. 28-29) is Piercing Arrow. The description of Piercing Arrow is as follows:

Piercing Arrow

You use transmutation magic to give your arrow an ethereal quality. When you use this option, you don’t make an attack roll for the attack. Instead, the arrow fires forward in a line, which is 1 foot wide and 30 feet long, before disappearing. The arrow passes harmlessly through objects, ignoring cover. Each creature in that line must make a Dexterity saving throw. On a failed save, a creature takes damage as if it were hit by the arrow, plus an extra 1d6 piercing damage. On a successful save, a target takes half as much damage.

My question specifically is how is this handled for enemies that are large than your normal 5’x5′ square? A Tarrasque is said to be 70′ long, and if the arrow goes 30′, then it would pass through 6 5’x5′ squares before it’s done. RAW it seems to say it would just hit it a single time.

So versus a large monster, would this basically be a single shot against a large creature (bow damage + 1d6 piercing) and is more tailored to a line of smaller enemies?

Also, would it be too much of an imbalance to have a creature do multiple saves and damage if it passes through multiple squares’ worth of its space? (I’m thinking of something like the Piercing Ammo or Dragon Piercer from Monster Hunter World.)

Does immunity to piercing damage make you immune to the pull effect of the spell Thorn Whip?

If a character has gained immunity to all piercing damage, would that character also be immune to the pull effect of Thorn Whip?

For reference:

Thorn Whip
Transmutation cantrip

Casting Time: 1 action
Range: 30 feet
Components: V, S, M (the stem of a plant with thorns)
Duration: Instantaneous

You create a long, vine-like whip covered in thorns that lashes out at your command toward a creature in range. Make a melee spell attack against the target. If the attack hits, the creature takes 1d6 piercing damage, and if the creature is Large or smaller, you pull the creature up to 10 feet closer to you. This spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).

Does the Arcane Archer’s Piercing Arrow pass through Walls of Force and Forcecages?

The following is within the scope of Dnd Adventurers League play.

The Arcane Archer martial archetype of Xanathar’s Guide to Everything alllows you to select the “Piercing Arrow” Arcane Shot option :

You use transmutation magic to give your arrow an ethereal quality. When you use this option, you don’t make an attack roll for the attack. Instead, the arrow shoots forward in a line, which is 1 foot wide and 30 feet long, before disappearing. The arrow passes harmlessly through objects, ignoring cover. Each creature in that line must make a Dexterity saving throw. On a failed save, a creature takes damage as if it were hit by the arrow, plus an extra 1d6 piercing damage. On a successful save, a target takes half as much damage.

The Forcecage spell (box option) says :

[…] A prison in the shape of a box can be up to 10 feet on a side, creating a solid barrier that prevents any matter from passing through it and blocking any spells cast into or out from the area. […] The cage also extends into the Ethereal Plane, blocking ethereal travel.

The Wall of Force spell says :

Nothing can physically pass through the wall. The wall extends into the Ethereal Plane, blocking ethereal travel through the wall.

Does the Arcane Archer’s Piercing Arrow pass through Walls of Force and Forcecages (box option) ?

It seems to be a situation in the likes of “unstoppable force meeting unmovable obstacle”. It says it ignores cover, which those 2 spells provide, but its flavor text mentions an ethereal quality, which may or may not be relevant (since the spells normally block ethereal travel). I don’t know if the right answer is “it works”, “it doesn’t work”, or “DM Discretion”.

I need some help with understanding +3 Piercing [duplicate]

This question already has an answer here:

  • How do I figure the dice and bonuses for attack rolls and damage rolls? 5 answers

I’m super new to DnD and I was hoping to get some clarification on a few things. My character has a long bow and a short sword. For the longbow it has an ATK bonus of +5 and damage/type of 1d8 +3 piercing… my question is how do I calculate that? Do I role the d8 then add +5 and +3? Or what do?

Does adding ‘piercing’ tag to warhammers break anything?

Realistically speaking, war hammers were used specifically for breaking through armor:

War hammers were developed as a consequence of the prevalence of surface-hardened steel surfacing of wrought iron armors of the late medieval battlefields during the fourteenth and fifteenth centuries.

In Dungeon World there is the Piercing weapon tag, it means specifically that:

n Piercing: It goes right through armor. When you deal damage with n piercing, you subtract n from the enemy’s armor for that attack.

However, neither Warhammer nor Mace do not have Piercing . They have no difference from swords and axes, actually:

Short Sword, Axe, Warhammer, Mace; close, 8 coins, 1 weight

As a DM, I want to add 1-2 Piercing to war hammers in my game. My concern is, there is only one weapon that actually has Piercing in the default equipment (a “dueling rapier”, whatever it is). In terms of game balance, does adding Piercing tag to warhammers break anything?

By “balance” I mean that game should feel fair, and nobody steals the spotlight from any PC. Sister question: Does adding 'precise' tag to daggers break anything?

Arcane Archer’s Piercing Arrow and +3 Ammunition

A +3 arrow loses it’s magical property once it hits a target, but the description on Piercing Arrow says that the target takes damage as if it was hit by the arrow.

So that mean that if an arcane archer uses Piercing Arrow with a +3 arrow and hits multiple targets with it, the arrow doesn’t stop being +3 after the first target? And if doesn’t, is it the same with arrows of slaying?

Flameskull resistant to magical piercing damage?

Most creatures in D&D 5e have specifics on what attacks or weapon damage types they are resistant to. For example

Damage Resistances: Bludgeoning, Piercing, and Slashing From Nonmagical Attacks

However, the description of the Flameskull entails resistance to piercing damange without the phrase “From Nonmagical Weapons/Attacks.”:

Damage Resistances: lightning, necrotic, piercing

Flameskull, Monster Manual, pg. 134

Wouldn’t that mean the Flameskull is resistant to magical piercing damage as well as non-magical piercing damage?

Poison Arrows Piercing damage reduced to 0, do you still get poisoned?

I have created a fighter, who is using heavy armor and has the Heavy Armor Master feat.

The Heavy Armor Master Feat states that:

While you are wearing Heavy Armor, bludgeoning, piercing, and slashing damage that you take from non-magical Weapons is reduced by 3.

This character was shot and hit, by a longbow loaded with a poison arrow.

The attack did 2 Piercing and 5 Poison damage.

Because of the HAM feat, the piercing was reduced to 0, and then comes the question….

Because the arrow did not pierce, presumably because the armor absorbed the hit, should the character still be affected by the poison damage ?

The shooter was a Yuan-ti pureblood, presumably neither the Longbow, arrow, or poison was “magical”