Hearthpwn

Hi I would assume Antonidas? 

I have boom and saraad not that saraad is really for ladder

Lol so Justicar or Rhonin aren't gonna take over the top spot any time soon

Archmage Antonidas should be your first craft if you're only concerned with crafting a Mage deck as he's one of the few class legendary that is in basically every deck where Mage is concerned. Other that that, Dr. Boom is your best bet, he's useful with every class and is in most Mage deck besides Freeze. Ragnaros the Firelord is another good one to craft. He again, is used in other classes decks and is very good in a variety of Mage decks.

Rhonin is very slow and really only decent in a few select Mage decks.Justicar Trueheart isn't used in any Mage decks I know of and probably wont be anytime soon, as a 2 atk hero power is only decent at best.

dr, boom, then antonidas, then alex, bloodmage, rag, rhonin, toshley, or sylvannas base on deck and playstyle

It really depends on the type of deck you're going to play.

Ysera is a pretty solid choice too.

Archmage Antonidas for sure. He was also my first craft after Boom and I never regretted it.

Yeah, it's definetly Archmage Antonidas, one of the best class legendaries in the game.

Dr Boom, Dr Fire Ball. Both so strong