It's a bit restrictive since the ability only triggers once a turn, but a powerful value engine in a deck that triggers it on your opponents turns
In most instances, this should perform about the same as Eldritch Evolution, with the possibility to be better on account of its cheaper MV
You might be able to attack different players in a multiplayer game, but youre never allowed to say, My creatures attack me this turn. If that feels too restrictive, remember that Magic is a game built around the idea of dueling wizards
It uses cards with outlast and bolster and others
You can also gain four life or ramp a land from the top five cards of your library
As one of most popular Dimir commander, both in general and cEDH, players expect Yuffie / Yuriko to go straight to Brawl's hell queue on day 1, as she'll very likely be one of the best commanders in that format, too