It too easily allows for access to a large portion of ones deck, without having to guess how far you need to go, and leaves the mana up for casting the cards drawn right away
It doesn't matter if that card was cast as an Adventure or not
Only vigilance critters won't care
Note that since the permanents become the target, this wont trigger any sort of ETB effects.
Mirri, Weatherlight Duelist [Cat]: The first clause is limiting, but not that limiting
Back Sephiroth, One-Winged Angel Legendary Creature - Angel Nightmare Avatar Flying Super Nova - As this creature transforms into Sephiroth, One-Winged Angel, you get an emblem with "Whenever a creature dies, target opponent loses 1 life and you gain 1 life." Whenever Sephiroth attacks, you may sacrifice any number of other creatures