i think it could be kind of funny getting spells of another class, and it's a better way than Cho to get them imo, although can be unreliable since you could get potentially useless spells sometimes
probably not good to use vs classes like warrior unless you're desperate, but against some classes you're likely to get something that can be useful

I dont know if it'll be the best deck, but I think there will be enough dragons to make a pretty strong deck.
Hungry dragon, azure drake and twilight drake are really playable.

And there are several other ones that could fit a deck depending on what you want to do with it. (Sorcerer, Alex, Ysera, Faerie Dragon, Deathwing)

Core mage will use it

Too slow to play them, need like 1 and 2 casting cost dragons. Other wise you get face smashed by all the aggro decks.

drakonid crusher with alex,will be very good.also nefarian...imba creature

eh, you shouldn't really need alex for it unless you're unable to get your opponent that low without it

Nefarian will be good. Inb4 dragon handlock.

it's pretty bad for 9 mana

This isn't legacy MTG