Infinite triggering is possible for both, it doesn't break down when Samurai is added, more so, adding Samurai actually adds so much consistency. Case B by the way is irrelevant, that setup is really bad.
Sounds good on paper until you try to set up a team like that. Just to remind you guys, trigger-based lineups have the aura of "If I attack, there's a x% chance to trigger others in aura to attack". Ideally, a shizu samurai trigger lineup would look like either set-ups.
Case A:
[Warlord ] [Archer A]
[Samurai] [Archer B]
[Archer C]
Case B(less effective):
[Warlord ] [Archer A]
[Samurai] [Archer B]
[Magebane]
During samurai's turn to attack, she does not trigger anyone else in her aura to attack. Let this be clear.
During warlord's turn to attack, he might trigger: 1. Samurai to attack, which ends here -> no more triggers
2. Archer A to attack, which might trigger: 2a. Warlord to attack, repeating the process
2b. Archer B to attack, which might trigger: 2b1: A to attack, which might trigger 2
2b2: C to attack, which might trigger 2b
However, if a proper trigger-based lineup (as shown below) is used,
[Warlord ] [Archer A]
[Magebane] [Archer B]
[Archer C]
Infinite triggering is possible. Anyone can trigger everyone (even himself eventually), but this ideal loop is cut when samurai is introduced. What she does is give 30% chance to anyone who attacks to attack again, thereby potentially triggering the triggerfest shown above. However, the chain loop dies if only samurai is triggered to attack again. Chance of infinite triggering is significantly lower.
Edit: Urgh... space constraint and formatting messed up what would have turned out to be something a programmer would understand.
The real reason why Shizu's aura is so potent is because even if alone, even w/o the help of other command aura units, she can even proc a single unit to attack so many times as long as RNG agreed so. I've seen 7x triggers straight from just 1 unit on her aura w/o any help from other trigger unit. It's because her aura triggers can keep triggering her aura or in other terms, a triggered attack can proc the aura again and again and again and so forth.
Now, with that in mind. If you add an actual trigger team that can infinitely cycle around her, she literally boosts the chances of that trigger team immensely. It doesn't matter if Shizu cannot start the trigger combos, all that matters is she is boosting the chance of very high chains as long as the trigger team is around her.
If that's still not enough explanation. The logic behind it is each time a unit on her aura attacks, EXCLUDING other sources of triggers, each attack has a chance to keep triggering self to attack again. Now, adding the fact that with a trigger team, they got multiple chances to attack again while standing on Shizu's aura, they will have more consistency.
If that's STILL not enough. I should teach you about trigger stacking. Trigger stacking happens when there are multiple triggers possible to proc in a single attack. For example,
Shizu - A
B - C
Let's say RNG was nice to keep making units A, B and C to keep commanding each other. Even if unit A and B kept triggering Shizu's aura when they attack, they will only continue to consume the command triggers coming from A, B and C. Once the chain stops, it will start consuming all the procs stacked from Shizu's aura giving a continuation for the trigger combo and this can keep going and going.
With everything said above considered, the aura is so potent as it can keep making a unit attack multiple times with just a single attack, what more if they attacked multiple times via chain commands while standing on Samurai Shizu's aura? I really hope this is enough explanation.
Again, she does NOT break a cycle, she makes it more consistent.
P.S. You never need 4 or 5 of the same aura type to create trigger combo cycles. Starting with 2 unit with same aura type, they can already create an infinite cycle with good RNG. Not sure where you got the idea that trigger teams needs to be composed of 4 or 5 units that requires everyone connected. The logic is just to have at least 2 or more units with the same aura type connected. Having less units doesn't mean it cannot trigger infinitely, with good RNG its always possible.
Read it again.
Dragoon can self-proc her stun despite her aura's description though...
