You cannot Special Summon monsters from the Extra Deck the turn you activate this effect, except Xyz Monsters
However, it can lead to just a handful of decks becoming dominant, able to beat any other decks they face - and thus the game's overall scene (often called its 'meta') becomes very samey, as everyone is forced to play with similar decks and cards if they want to have a chance of winning games
This means your package will be sent via UniUni
In the early days of Duel Monsters, many monsters were based on Egyptian mythology, while more modern cards took inspiration from the Kaiju genre or even Alice in Wonderland
So if you can find some, I assume they are non-violent
Her father, Hideo, is established in her backstory as a senator who is constantly busy with his work and never has time for her, and the one time they do spend time together, she awakens her Psychic Powers that turn her cards real, injuring him in the process