First, I'll point out the most obvious problem with this card - By design, you'll

only be playing it later in the game (naturally, it wouldn't be wise to design a

deck that can cast off your instants and sorceries immediately, because that

just wouldn't be very strategic); and, if you can get it to do what it's

supposed to do, you'll be drawing out a lot of cards (with no max hand size),

which is fine because you planned ahead and know how to utilize a bunch of

spells (which were dominated by instants and sorceries). Whatever you had

in mind, you know you'll need to quickly finish the game using that newfound

power (endless spells), because if you don't, you'll draw out the whole deck.

So, that would be a dangerous strategy if you were up against a "mill" deck,

on top of having only included the minimum 60 cards. Being as it is that

those decks are currently one of the most popular archetypes, you probably

won't be able to play with The Magic Mirror in Standard. Given that mill

decks are always a threat, your design would probably need to be something

large and elaborate, perhaps including 90 cards or more. I haven't tried doing

this, I simply don't have the time or interest to experiment every possibility,

but this is definitely the sort of card that artistically fills out a set, but isn't

really relevant to competitive play in Standard. I'd say, WAY too many cards

are fitting that category these days, but never blame business people for

trying to make more money - That would be downright un-American. On that

last point, it's really just a psychological trick that the fools play on their

selves - They'd make WAY more money if they didn't drive away their

following all the time by insulting our intelligence, and boring us to death.