On the Create Your Childs Account page there are fields for basic information, like name, age, user name, and password, as well as some additional options to control social content, like having a public profile and marketing preferences
Just you, and the people who get it
No matter what our opponent is playing, if we manage to cast 20 or even 40 cards from their deck for free, it should be enough to win the game in just about any matchup
"Group Slug" decks are multiplayer decks designed with the intention of interfering with and damaging all the players (or just all the opponents) at once through discard, effects that punish players for doing common game actions (such as tapping lands or drawing cards), remove permanents, prevent certain game actions (playing cards that stop players from searching libraries, for instance, or that force all creatures to attack every turn even if attacking is unfavorable)