Action Surge + Light/Nick

How does action surge work when combined with weapons with the light property and the nick mastery? Can this give a total of 4 attacks?

Action Surge: You can push yourself beyond your normal limits for a moment. On your turn, you can take one additional action, except the Magic action. Once you use this feature, you can’t do so again until you finish a Short or Long Rest. Starting at level 17, you can use it twice before a rest but only once on a turn.

Light: When you take the Attack action on your turn and attack with a Light weapon, you can make one extra attack as a Bonus Action later on the same turn. That extra attack must be made with a different Light weapon, and you don’t add your ability modifier to the extra attack’s damage unless that modifier is negative. For example, you can attack with a Shortsword in one hand and a Dagger in the other using the Attack action and a Bonus Action, but you don't add your Strength or Dexterity modifier to the damage roll of the Bonus Action unless that modifier is negative.

Nick: When you make the extra attack of the Light property, you can make it as part of the Attack action instead of as a Bonus Action. You can make this extra attack only once per turn.

Edit: How I see it, I have the following available during my turn:

• Action
• Action Surge = Action #2
• Bonus Action

Could I, for example, do the following:

1. Action: Attack with a Dagger and then a Shortsword as a single Action thanks to the Nick Mastery.
2. Action Surge = one extra Action: Attack with Dagger, the Light property grants me a Bonus Action.
3. Bonus Action: Attack with Shortsword.

This only uses the Nick Mastery once during this turn. And uses the Light ability twice.

I take 2 actions and 1 bonus action.

• Action 1 = 2 attacks
• Action 2 = 1 attack
• Bonus Action = 1 attack

Therefore, a total of 4 attacks.

Is this an oversight or the intention of the wording?

No, it can't. As stated in the Nick description, the extra attack from the Light property can only be made once per turn. Action Surge gives you an additional action, but it's still part of the same turn, so you can't make the Light attack again.

Quote from wagnarokkr >>

No, it can't. As stated in the Nick description, the extra attack from the Light property can only be made once per turn. Action Surge gives you an additional action, but it's still part of the same turn, so you can't make the Light attack again.

'This' is used to refer to previous instance, not some instance that occurs in a different paragraph of text a section earlier. So the only reasonable interpretation is that you can only use NIck once per turn, not that Nick imposes a limitation on the Light property. So you should be able to (in theory):

1. Attack Action. Make an attack with a Light weapon. Make an attack with the Nick property.
2. Action Boost Attack Action. Make an attack with a Light weapon.
3. Bonus Action. Make an attack using the Light property from #2.

Quote from VerilyRaze >>

Quote from wagnarokkr >>

No, it can't. As stated in the Nick description, the extra attack from the Light property can only be made once per turn. Action Surge gives you an additional action, but it's still part of the same turn, so you can't make the Light attack again.

'This' is used to refer to previous instance, not some instance that occurs in a different paragraph of text a section earlier. So the only reasonable interpretation is that you can only use NIck once per turn, not that Nick imposes a limitation on the Light property. So you should be able to (in theory):

1. Attack Action. Make an attack with a Light weapon. Make an attack with the Nick property.
2. Action Boost Attack Action. Make an attack with a Light weapon.
3. Bonus Action. Make an attack using the Light property from #2.

This is what I had thought.

Quote from VerilyRaze >>

Quote from wagnarokkr >>

No, it can't. As stated in the Nick description, the extra attack from the Light property can only be made once per turn. Action Surge gives you an additional action, but it's still part of the same turn, so you can't make the Light attack again.

'This' is used to refer to previous instance, not some instance that occurs in a different paragraph of text a section earlier. So the only reasonable interpretation is that you can only use NIck once per turn, not that Nick imposes a limitation on the Light property. So you should be able to (in theory):

1. Attack Action. Make an attack with a Light weapon. Make an attack with the Nick property.
2. Action Boost Attack Action. Make an attack with a Light weapon.
3. Bonus Action. Make an attack using the Light property from #2.

No one is saying that anything refers to "some instance that occurs in a different paragraph of text a section earlier"; I'm not sure where you're getting that from. It does, indeed, seem refer to the previous sentence in the Nick property's description. That description is:

When you make the extra attack of the Light property, you can make it as part of the Attack action instead of as a Bonus Action. You can make this extra attack only once per turn.

Just going by the normal rules of English, the part in blue, "this extra attack", is referring back to the part in green, "the extra attack of the Light property". I don't really see anything else here it could be referring to. The extra attack of the Light property is the only "extra attack" being mentioned that the phrase "this extra attack" could refer to.

Therefore, it seems to me that the intent here is to limit the extra attack of the Light property to only being used once per turn, regardless of whether you're making it as a bonus action or as part of the Attack action. Everything about Nick and Light and dual-wielding in general is kind of a mess in 5.5e, and all of it could obviously be worded more clearly, but I think this is the only interpretation that doesn't rely on inventing concepts that aren't actually in the rules.

In the normal rules of English, the part in blue references the entire concept of the attack - including the conditionals added after the comma. You can't just arbitrarily exclude necessary conditions attached to the idea. 'This' is referring to the attack that was moved into your Attack Action. It is the answer to the question "what is the Nick Attack?" not the answer to the question "what was the Nick Attack before it became the Nick Attack?".

Moreover, taken in the context of the rules, putting the "once per turn" limitation on Nick would be truly bizarre if your intent was for it to work the way you suggest. You would move that line to the description of the Light property.

Quote from VerilyRaze >>

 In the normal rules of English, the part in blue references the entire concept of the attack - including the conditionals added after the comma. You can't just arbitrarily exclude necessary conditions attached to the idea. 'This' is referring to the attack that was moved into your Attack Action. It is the answer to the question "what is the Nick Attack?" not the answer to the question "what was the Nick Attack before it became the Nick Attack?".

Nothing after the comma is a "conditional". The part after the comma is modifying how the extra attack of the Light property works when this weapon mastery property is used. 

"This" is not the answer to "what is the Nick Attack?" or "what was the Nick Attack before it became the Nick Attack?", because there is no "Nick Attack". This ability does not add a new attack the way that something like Extra Attack does; it just changes the timing of an existing attack. If the intent were for it to add a whole new attack that had different rules, it would be worded more like the Dual Wielder feat (which does add a new attack with different rules).

Quote from VerilyRaze >>

 Moreover, taken in the context of the rules, putting the "once per turn" limitation on Nick would be truly bizarre if your intent was for it to work the way you suggest. You would move that line to the description of the Light property.

The reason they didn't put that in the Light property is that, on its own, the fact that the Light attack is made as a bonus action is enough to limit it to once per turn already. This language in the Nick property is necessary to maintain that restriction when the attack is no longer a bonus action.

To be clear, I don't think that was a good idea; this is an example of the 5.5e philosophy of "never say anything that's even a tiny bit redundant" and the kind of confusion it can cause.

 How I see it, I have the following available during my turn:

• Action
• Action Surge = Action #2
• Bonus Action

Could I, for example, do the following:

1. Action: Attack with a Dagger and then a Shortsword as a single Action thanks to the Nick Mastery.
2. Action Surge = one extra Action: Attack with Dagger, the Light property grants me a Bonus Action.
3. Bonus Action: Attack with Shortsword.

This only uses the Nick Mastery once during this turn. And uses the Light ability twice.

I take 2 actions and 1 bonus action.

• Action 1 = 2 attacks
• Action 2 = 1 attack
• Bonus Action = 1 attack

Therefore, a total of 4 attacks.

Is this an oversight or the intention of the wording?

Quote from cuteasdeath >>

 How I see it, I have the following available during my turn:

• Action
• Action Surge = Action #2
• Bonus Action

Could I, for example, do the following:

1. Action: Attack with a Dagger and then a Shortsword as a single Action thanks to the Nick Mastery.
2. Action Surge = one extra Action: Attack with Dagger, the Light property grants me a Bonus Action.
3. Bonus Action: Attack with Shortsword.

This only uses the Nick Mastery once during this turn. And uses the Light ability twice.

I take 2 actions and 1 bonus action.

• Action 1 = 2 attacks
• Action 2 = 1 attack
• Bonus Action = 1 attack

Therefore, a total of 4 attacks.

Is this an oversight or the intention of the wording?

All the wording around dual-wielding in 5.5e is extremely unclear, and there has been a lot of disagreement about it in the community.

My position is that since the Nick property explicitly says you can only make the Light attack once per turn, in your example you can only make three attacks: one Attack action makes a normal attack and the Light attack, and the second makes one normal attack. Your bonus action is then free for some other purpose but can't be used to make an attack (unless you have some other feature, like Polearm Master, that grants a bonus action attack).

VerilyRaze's position is (if I'm understanding it correctly) that the Nick property grants its own special attack separate from the Light property attack, and that this attack and the Light attack can be used in combination in the same turn (the former as part of one of the two Attack actions, the latter as a bonus action).

In the absence of any official ruling establishing how it's meant to work, it's up to your DM to decide how it works at their table.

My position is that what the Nick property says is that you can only modify your Light extra attack once per turn and the limitation in the text of Nick doesn't have any effect on an unrelated body of text elsewhere in the rules. "This extra attack" refer to the specific type of attack described in the previous sentence, not an unrelated extra attack described elsewhere.