Rules about Mythic Weapon Runes and the Deadly trait

[nanrin]

Hello,

I hope you can help me. I had a small discussion about a damage roll found on Reddit.
For interested people you will find it here: Link to Reddit

Within this roll the weapon seems to be one with the following runes/traits:

• - Mythic Striking rune (which heighten the damage to 5 weapon damage die)
• - Mythic Weapon Potency (which makes it a +4 weapon)
• - Deadly d8 trait

So now the discussion setup:
RAW the extra damage from the Deadly Trait increases by using higher Striking runes, up to 3 dice with a major striking rune. The Mythic Striking rune is not mentioned there.
I am the opinion the Mythic Striking rune is just a follow-up of the Major Striking rune. Since it increases the damage by one additional weapon die, the amount of Deadly dice also increases by one, up to 4 dice.
But my friend said, that there would be no ruling for that and therefore the value is incorrect.

I have many experience in PF1 and also played WotR with Mythic rules and there were many rolls with stupid high damage values.

My question is: Are there any official or reliable rules or information about the usage of Mythic Weapon Runes and traits like Deadly, which scales with higher Weapons rules?

[Finoan]

nanrin wrote:

My question is: Are there any official or reliable rules or information about the usage of Mythic Weapon Runes and traits like Deadly, which scales with higher Weapons rules?

No, there are not.

Neither the Mythic Runes general rules or the Mythic Striking Rune specific item say anything about interacting differently with the Fatal or Deadly traits.

And the Fatal and Deadly traits were written long before Mythic rules existed, so don't have any specified interactions with Mythic Runes. Similarly, the Counting Damage Dice rule was written before Mythic rules existed, though that one at least doesn't prevent interacting with and counting all 5 damage dice from a Mythic Striking Rune.

So it is up to the table to decide if using the Mythic rules (a variant rule set - which is basically an official houserule that will often need additional houserules in order to work properly) should override the Deadly trait's restriction to 3 additional damage dice for a Major Striking Rune or not.

[NorrKnekten]

Player Core pg. 276 "Counting Damage Dice" wrote:

Effects based on a weapon's number of damage dice include only the weapon's damage die plus any extra dice from a striking rune. They don't count extra dice from abilities, critical specialization effects, property runes, weapon traits, or the like.

So you are absolutely correct that the mythic striking rune does infact increase the damage die.

There is however nothing that would signify that Deadly would gain another die since its not based on the number of dice, and it does not increase for each tier or rune either. For example, The deadly trait does not gain a die from a basic striking rune.

[Finoan]

NorrKnekten wrote:

For example, The deadly trait does not gain a die from a basic striking rune.

I would counter that this is not just an example. It is in fact the only tier of non-Mythic Rune that doesn't increase the additional dice for the Deadly trait.

And it is also the first rune in the list. After that rune, the pattern is clear (though unstated by rule). One additional dice for each additional tier of Striking rune.

[NorrKnekten]

Maybe so, but since its not written we also don't know if the pattern is the intent or if deadly is just supposed to add dice at the levels you earn those specific runes, in much the same manner as backstabber only increasing once it turns into a +3 weapon. I would imagine several people think that increasing it so soon after the previous increase would be to much but as said thats subjective especially with Mythic.

The only clear answer really is "We don't know" with an emphasis that the GM has the final say due to the ambiguity and may take a strict RAW approach that it simply doesn't, or as earlier said, discuss with the table to come to a concessus on what the table consider RAI.

[Theaitetos]

No, the only clear answer is that RAW is too bad to be true:

Quote:

Deadly

On a critical hit, the weapon adds a weapon damage die of the listed size. Roll this after doubling the weapon’s damage. This increases to two dice if the weapon has a greater striking rune and three dice if the weapon has a major striking rune.

A Mythic Striking Rune is neither a Greater Striking Rune nor a Major Striking Rune, and thus upgrading a Major SR to a Mythic SR would RAW downgrade the Deadly trait from three additional dice to just one additional die.

[Finoan]

Theaitetos wrote:

A Mythic Striking Rune is neither a Greater Striking Rune nor a Major Striking Rune, and thus upgrading a Major SR to a Mythic SR would RAW downgrade the Deadly trait from three additional dice to just one additional die.

Perfection.

Strict RAW is a troll ruling.

[NorrKnekten]

Yup, the most literal of RAWs thats so bad that it takes someone actually pointing it out before people realize how little sense it makes as written.