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For hit/wound/number of shots/damage.

Is it the facing of the dice used in calculating the value, or is it the value of the hit/wound/number of shots/damage.

Value. On d3 you have results 1,2 and 3. You roll 1's out of those.

The previous thread on the subject: https://www.dakkadakka.com/dakkaforum/posts/list/758656.page

It's the value of the dice used, not a facing.

So you can't reroll any dice when determining the shots for say, Cawls Wrath (2D6) or a Twin Siegebreaker cannon (2D3) but you could reroll a 1 for the Volcano cannon (D6). And you can reroll a 1 for the D3 damage on an unsaved wound from a Twin Siegebreaker, but you can't reroll any ones on the Volcano Cannons 3D3 damage per unsaved wound?

Have I got this right?

Halfpast_Yellow wrote:
So you can't reroll any dice when determining the shots for say, Cawls Wrath (2D6) or a Twin Siegebreaker cannon (2D3) but you could reroll a 1 for the Volcano cannon (D6). And you can reroll a 1 for the D3 damage on an unsaved wound from a Twin Siegebreaker, but you can't reroll any ones on the Volcano Cannons 3D3 damage per unsaved wound?

Have I got this right?

From the BRB errata:

RE-ROLLS
Some rules allow you to re-roll a dice roll, which means you get to roll some or all of the dice again. If a rule allows you to re-roll a result that was made by adding several dice together (e.g. 2D6, 3D6, etc.) then, unless otherwise stated, you must roll all of those dice again. You can never re-roll a dice more than once, and re-rolls happen before modifiers (if any) are applied

So you are correct, you can't use the stratagem to re-roll any of the dice from a 2D6 or 2D3, because those rolls can never be a 1. Now, if it had said "re-roll all dice that are 1" or something similar, then you could. But it doesn't, so you can't.

Now, if it was an effect like the Earthshaker Cannon has, which has D6 for the number of shots, and then tells you to "Roll two dice for the number of attacks when firing this weapon and discard the lowest result.", you could re-roll all 1's you get, for both dice.

I'm going to disagree. Each die is read individually. 2D3 is shorthand for roll 2 dice with 1-3 on them. After rolling the dice add them together for a final result.

The strategy says that you re-roll "1"s. It does not say re-roll if the resulting total of the dice rolled is a "1". So, if you're told to roll 2 d3's then you look at them individually, re-roll if any 1s are rolled and, then add the results together.

Leo_the_Rat wrote:
I'm going to disagree. Each die is read individually. 2D3 is shorthand for roll 2 dice with 1-3 on them. After rolling the dice add them together for a final result.

The strategy says that you re-roll "1"s. It does not say re-roll if the resulting total of the dice rolled is a "1". So, if you're told to roll 2 d3's then you look at them individually, re-roll if any 1s are rolled and, then add the results together.

You seem to have misread the codex. It does not say you re-roll 1s. It says you must "re-roll all rolls of 1". BRB states "Warhammer 40,000 uses six-sided dice, sometimes abbreviated to D6. Some rules refer to 2D6, 3D6 and so on – in such cases, roll that many D6s and add the results together." 2D6 is always 2 dice added together, you can't separate the dice like you claim.

The key word is roll here. If it just said "re-roll 1's" then you'd have a point.