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I left my BRB at home while I'm traveling out-of-state, but a question popped into my head while driving to the airport, and it's burning a hole in my brain.

Is there any reason to think that Daemon of Tzeentch + Aegis would result in a Ld9 for a LoC? Does the Tzeentch +3 add before the Aegis is subtracted: Ld 9+3=10-1=9. Or does Multiple Modifiers specify that addition and subtraction happen at the same time, resulting in a more algebraic method: 9+(3-1)=10.

I'm inclined to think it is the latter.

Multiply before addition, basic math.

 SoloFalcon1138 wrote:
Multiply before addition, basic math.

There's no multiplication involved, so your answer doesn't help in the slightest.

But I agree, it would be the standard algebraic interpretation. Any other way would lead to the argument of which applies first. If you apply Aegis first the Daemon gets Ld10, if you apply the Tzeentch bonus first you'd end up with Ld9. That's an absurd situation, so the consistent standard Mathematical approach is the best.

Sorry, I that's what I meant. Typed faster than I proofread.

PEMDAS

Addition comes before subtraction.

So you would add 3, to a maximum of 10, and then subtract 1(or 4 if a Dreadnought is involved)

PEMDAS doesn't work exactly like that, though.
It should be spelled PE(M/D)(A/S). Addition and subtraction are the same thing, and happen at the same time, just in different directions. Positives and negatives effectively cancel out. Tzeentch adds 3 to Ld; Aegis adds -1. Same operation, just in opposite directions.

This question, too, is complex because in normal math problems, you don't have a capped value. In a normal problem it would be 9+3=12-1=11. But since characteristics are capped at 10, I was wondering whether the +3 bounced up against the cap. I don't think this is the case, and instead would propose a normal notation: 9+(3-1). This leads to 11, but we know Ld can't exceed 10, so 10 it is.

 Grey Templar wrote:
PEMDAS

Addition comes before subtraction.

So you would add 3, to a maximum of 10, and then subtract 1(or 4 if a Dreadnought is involved)

Except we've been here before, and you cannot cap part way through the formula. This was the case with modifiers for vehcile damage in 5th as well - if you cap part way through you end up with odd results

(9+3-1) = 11, capped at 10. Capping part way through has no support in the rules

Lord of change would be ld8 because of the aegis. You'd only check for a characteristic maxing out after all modifiers are applied. If your opponent doesn't like it, just claim it's your turn and you chose to apply the aegis first.

Just for fun thought

If the cap is Ld10 for the final number/rolling etc., at what point does the rulebook say the number cant be higher while computing the usable number?

Example
Ld9+3 = 12, (still computing here now..) - 1Ld for the AG (now at 11), final tally is >10, so LD is taken to 10.

 loreweaver wrote:
Lord of change would be ld8 because of the aegis. You'd only check for a characteristic maxing out after all modifiers are applied. If your opponent doesn't like it, just claim it's your turn and you chose to apply the aegis first.

No, he would be Ld10, as (9+3-1) is 10 due to the cap.

As has been described above, in math addition and subtraction are the same thing; it's just adding positive or negative numbers. So per the normal mathematical order of operations (which the rulebook tells us to use with multiple modifiers), the addition and subtraction happen at the same time. 9 + 3 -1 = 11, capped to 10.

 loreweaver wrote:
Lord of change would be ld8 because of the aegis. You'd only check for a characteristic maxing out after all modifiers are applied. If your opponent doesn't like it, just claim it's your turn and you chose to apply the aegis first.

Your turn?, the LoC would never be using a psyhic power in your turn.