While it doesn't directly synergize with Aminatou, Veil Piercer's miracle ability for cards in hand, it does create interesting opportunities once permanents are on the battlefield
It also allows some lifelink shenanigans to happen as well, giving Black some added reach for those triggers
Other effects that set its power to a specific value that start to apply after the ability resolves will overwrite that part of the effect
It isn't super pressing but you might just not find the right answer and have to use something awkward
These characters hail from Final Fantasy IX, which we havent seen any cards from so far, so this would make a lot of sense
For instance, the new blue Shrine from Magic 's new Kamigawa: Neon Dynasty set only mills one target player and the green Shrine only cares about putting +1/+1 counters on other Shrines its controller has, not working towards any game plan in particular