these are just my opinions
black- easily something that both helps you and hurts you. because black is all about taking a chance, hurting yourself for an overall gain, i would have to say Visara, the dreadful. already it's a risk to have in the deck. blacks best cards cost 3, 4, and 5. plus are you really gonna want to save up for a 6 mana card?
blue- manipulating your opponent into doing whatever you want, and of course optimizing your options..so i choose the fatespinner. great ability for a relatively inexpensive creature.
white-protecting itself, making the field clear for it's army of creatues to get through, so i pick the exaulted angel. because she both hurts your opponent and helps you be able to sustain more damage.
green-green is all about producing creatures faster, bigger, and meaner, with the help of smaller faster creatures. so i choose the happy median the werebear
red- red combines speed and expendable creatures with burn spells. so i choose Ryusei, the Falling Star. he is both a dragon that is relatively easy to get out, and comes with a burn spell
artifact-now your probably thinking, "she's gonna pick the black lotus because, so far, all the cards named have that feel. plus it's the most useful card on turn one. or maybe one of the new mirrodin cards" well your wrong. i mean except for sunburst what's three mana of any color gonna do you? is it better then three colorless mana? (tis is only if your doing a pure artifact deck) no! i choose the best artifact creature, the ornithopter
gold- ahh. gold. the staple reason of making bad multicolor decks. so lets go with the sliver queen. pretty much a staple in a sliver deck. lots of bad decks are modeled after some newb gets their hands on this and a huge pack of slivers.
land- ohh. you know what? lets just say all of the duel lands. sinc i'm not gonna go into the urza lands.
enchantment-verdant succesion. most green decks have more then 1 of each creature. right? ok 'nuff said
sorcery-book burning. probably one of the best burn spells to play on turn two. i mean your opponent is gonna take 6 damage. or risk dropping some good cards among those top six. and if your using threshold. you can book burn yourself and get threshold on turn two
instant-ah. counterspells. or rather the counterspell, dissapate. for an extra 1 you get to remove that pesky spell that you saw in your oppnents hand the turn before
creature-and the best creature card in the entire game is this one. it's a unique card. a dragon, to be precise. thats right. i;m talking about the shichifukujin dragon. you've never heard of it have you? that's to be expected since only one exists in the whole world.
and now the pictures to the cards that i named
best
black-
blue-
white-
green-
red-
artifact-
gold-
land- i'm not gonna do the multicolored lands. basically the are both kinds of land in a single. card. you get to chose to add one type or the other when you tap them
enchantment-
sorcery-
instant-
creature-
oh right. for the dragon. the first two that you sac don't need to be on him. it doesn't say that
