[RPG] How many attacks does an Unchained Monk in Unchained Action Econothe with Flurry of Blows have at 10th level

I've gone through a handful of posts here about the Unchained Monk + Flurry of Blows + the Unchained Action Economy, on Reddit, and on Google results that discuss this scenario, but they all seem to fall short of really explaining it completely. It seems that you can construct a Level 10 Unchained Monk that can attack NINE TIMES in a single, 3-action round. Can someone please explain where in my reasoning this is wrong and how many attacks an Unchained Monk in the Unchained Action economy actually has?

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NOTE: Snappie sagely notes in the comments that the Flurry counts as an Advanced Action in the UAE, which means you can't do 3 of them in a round! Makes sense. That would also means you can't do ki strikes in conjunction with a Flurry of Blows, despite what the Unchained Monk rules say, since you need a Swift Action to add them to the Flurry of Blows, and if the Flurry occupies all 3 acts, then you're out of luck to use one.

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NOTE: Simple Lime seems to disagree with Snappie that Flurry of Blows is not a full round action in the Unchained Action Economy. Which would mean then that my below explanation stands. However, s/he suggests that you would only count Elbow Smash once in the round. At 10th level, this is supported by the language "At 9th level, and every 4 levels thereafter, a monk learns an additional style strike. He must choose which style strike to apply before the attack roll is made. At 15th level, he can designate up to two of his unarmed strikes each round as a style strike, and each one can be a different type. The monk can choose from any of the following strikes." S/he also is uncertain if you could use Medusa's Wrath with the Flurry, since the Flurry is no longer a full-round action (see his/her comments below for specific reasoning), but if you could, it should only happen once (provided you succeeded in 1 unarmed attack during the three simple attacks against a status'd opponent) because a "full-attack action" in the UE may be interpreted to mean, once you've used up all 3 acts.

Let's use a Level 10 Unchained Monk as an example with no STR bonus or any other bonus to make things simple.

I would have a +10 / + 5 BAB according to the UC Monk chart.

In the Unchained Action Economy (UAE), if I do nothing else, I can make make 3 actions that are "attack subtype." So on each action I do Flurry of Blows.

Flurry of Blows under the Unchained Action Economy reads:

"At 1st level, you can make an additional attack with a –2 penalty on your first attack simple action during a turn. At 8th level, you can make an additional attack on both your first and second attack simple actions during your turn. At 15th level, you can make an additional attack on each of your attack simple actions during your turn. You must, of course, take all the penalties associated with those attacks."

Does this mean the following?

1st Attack Action (Flurry of Blows)

1. +10 initial class attack
2. +8 extra attack from Flurry at -2 (+10 – 2)

2nd Attack Action (Everything is at -5 per UAE rules, Flurry again)

3. +5 initial class attack (+10 – 5)
4. +3 extra attack from Flurry at -2 (+10 – 5 – 2)

3rd Attack Action (Everything is at -10 per UAE rules, normal attack)

5. +0 initial attack (+10 – 10)

You'll note on the face of it that I'm determining the Flurry of Blows' extra attack in each of the first two attack actions as calculated from the highest BAB. This is because the rules, whether you're relying on the Unchained Monk or the regular Monk, both instruct you to do exactly that. The Unchained Monk rules say it's made at the "highest base attack bonus" whereas the regular Monk rules say "for the purposes of [Flurry extra] attacks, the monk's base attack bonus from his monk class is equal to his monk level." So it seems to be +10 BAB in either case, then minus 2 per the action economy rules above.

OK. Does this look correct so far or am I missing something?

Now at 10th level I have at least 5 Ki points in my pool. The Unchained Monk says:

"By spending 1 point from his ki pool as a swift action, a monk can make one additional unarmed strike at his highest attack bonus when making a flurry of blows attack."

So then:

1st Attack Action (Flurry)

1. +10 initial class attack
2. +10 ki strike (expending 1 point) via Swift Action
3. +8 extra attack from Flurry at -2 (+10 – 2)

2nd Attack Action (Everything is at -5 per UAE rules, Flurry)

4. +5 initial class attack (+10 – 5)
5. +3 extra attack from Flurry at -2 (+10 – 5 – 2)

3rd Attack Action (Everything is at -10 per UAE rules, normal)

We can't take a third attack action because we used a Swift Action to activate the ki strike as our 1st action.

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SIDEBAR:

It seems we can't use TWO ki strikes in the 3-action economy because we'd need to use 2 swift actions to do that (which would result in only 1 Flurry):

"A swift action in the default action economy is always a simple action in this system. You need commit only 1 act to take that action. In rare cases, a GM might want to limit a given swift action to only once per turn."

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Moving on…

At 10th level, I have slots for 2 Style Strikes, one at 5th level and one at 9th. "Whenever he makes a flurry of blows, he can designate one of his unarmed strikes as a style strike. This attack is resolved as normal, but it has an additional effect depending on the type of strike chosen." At 10th level we can only apply one to a single unarmed attack per round, since you get two options (of different kinds) at 15th level. I choose Elbow Smash and Head-Butt. Here it the text of Elbow Smash:

"The monk follows up a punch with a strike from his elbow. If the attack hits, the monk can make an additional attack using the same attack bonus as the punch at a –5 penalty. If this second attack hits, it deals damage as normal, but all of the damage is nonlethal. The monk must attack with a fist to use this style strike."

So now:

1st Attack Action (Flurry of Blows)

1. +10 initial class attack.
2. —> if this was a punch, I get an extra nonlethal attack at +5 (+10 – 5, as the Elbow Smash has a -5 penalty).
3. +10 ki strike (expending 1 point) as a Swift action.
4. +8 extra attack from Flurry at -2 (+10 – 2).

2nd Attack Action (Everything is at -5 per UAE rules, Flurry again)

5. +5 initial class attack (+10 – 5).
6. +3 extra attack from Flurry at -2 (+10 – 5 – 2).

3rd Attack Action (Everything is at -10 per UAE rules, normal)

We can't take a third attack action because we used a Swift Action to activate the ki strike as our 1st action.

Finally, suppose at 8th level I took Medusa's Wrath as my bonus feat from the list of bonus feats available to the monk. This says:

"Whenever you use the full-attack action and make at least one unarmed strike, you can make two additional unarmed strikes at your highest base attack bonus. These bonus attacks must be made against a dazed, flat-footed, paralyzed, staggered, stunned, or unconscious foe."

This works in conjunction with Head-Butt, which has the potential to stagger your target if the hit is successful. Note that if "the full attack action" excludes Flurry in the unchained action economy, then we can't use Medusa's Wrath with Flurry.

So finally:

1st Attack Action (Flurry of Blows)

1. +10 initial class attack as Head-Butt.
2. Medusa's Wrath kicks if successful "staggered" effect on target, extra attack at +10
3. And another from Medusa's Wrath (because you get two)
4. +10 ki strike (expending 1 point) via a Swift Action
5. +8 extra attack from Flurry at -2 (+10 – 2)

2nd Attack Action (Everything is at -5 per UAE rules, Flurry again)

6. +5 initial class attack, say as Stunning Fist (+10 – 5), since I don't think we can stagger our opponent twice in the same round
7. Medusa's Wrath kicks in if successful "stunned" effect on target, extra attack at +0 (+5 – 5)
8. And another from Medusa's Wrath (because you get two)
9. +3 extra attack from Flurry at -2 (+10 – 5 – 2)

3rd Attack Action (Everything is at -10 per UAE rules, normal)

We can't take a third attack action because we used a Swift Action to activate the ki strike as our 1st action.

For a grand total of 9 attacks???

I mean granted these last few attacks are conditional, and for the second set of Medusa's Wrath attacks, it would need to be on a separate target, but I wouldn't see it as being too difficult to pull at least half of this off quite frequently, all things considered.