If at least one creature in combat has first strike or double strike, you can activate Yuffie's ninjutsu ability during the first-strike combat damage step
Their abilities are extended, allowing players to move between worlds with the right crystal, move through time, or even bind a summoned monster
Archazia also mentions that the Hexwell Crown is one half of a larger artifact, while also granting the team magical "coils" onto their Inkcasters that allow them to summon characters with dual ink affinities
If the ability that's copied is modal (that is, it says "Choose one " or the like), the copy will have the same mode
It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or any Auras or Equipment attached to it, or any non-copy effects that have changed its types, color, power and toughness, and so on
Characters like Mirabel, Mulan, Iago, and even Bolt (remember him?) come out looking better than ever