Nearly all the Leaders added in OP04 came from these two arcs, with Vivi (Red/Blue) and Crocodile (Purple/Yellow) from Arabasta and Doflamingo (Green/Purple), Issho (Green/Black), and Rebecca (Blue/Black) from Dressrosa
I've also found it makes it harder to cast your commander and other spells as it'll keep trying to zoom into the card before you can actually cast anything
[4] At the beginning of each of the archenemy's pre-combat main phases, they draw the top card of their scheme deck, leaving it to face up in the command zone, and "set [it] in motion"
GX episode 48: "Rise of the Sacred Beasts, Part 1" Yu-Gi-Oh
If a creature under the effects of the first chapter ability can't attack for any reason (such as being tapped or having come under your control that turn), then it doesn't attack
The effect of 2 is Buppa with the Argyro system as a cost, and the Argyro system itself can be recovered from his GY, so it's not as romantic as it looks, and the effect itself is powerful, so I want to aim for it when I can