I have all the necessary legendaries right now and I'm at 1600 dust again, which do you think I should make?
I'm leaning strongly towards Thalnos since I play freeze mage a lot (with loot hoarder instead) and I do like to play oil rogue on occasion.
Or maybe cenarius although I don't play druid as much as I used to. Mal'ganis might also be cool to have.

yea make thalnos

the black knight because he fits most decks, enjoy killing tirion and argus'd dragons

if you focus playing freeze mage, thalnos is a must. there is no replacement for that.

i'm thinking that malygos can fit amazing in a freeze mage deck because of EMperor.8 mana malygos or even 9 with zero mana ice lance+1 mana frostbolt = rekt.

thalnos is a good card,but i felt bad when i use 1400 dust for him.also i felt bad when i use 1400 dust to craft harrison.

black knight its a good card,but hes also very situational card.almost useless on ladder vs thousands of aggro decks.

malganis,if you play ZOO or demonlock,go for him ofc.

cenarius.double combo druid are better than ramb anyways...so cenarius isnt worth crafting him unless u really like ramp.

ysera,probably best card in game and winning card.sure,go for it.

that's my opinion on what to craft.maybe my opinion is bad,but i guess,thats why i cant go further than rank 8. Lol

Malygos, and black knight are currently almost not used at all. As for the rest, Ysera is used in control warrior, though not all control warrior decks. Mal'ganis is used in the midrange zoo lock. Cenarius is used in some druid decks, but I don't believe he's used in the most popular ones. Thalnos is used in freeze mage, weapon rogue, miracle rogue if it ever makes a comeback, and midrange shaman if it ever makes a comeback. Unless you specifically want to play zoo or control warrior, I would go with thalnos.

Thanks for the input dudes, made thalnos and next 2 im gonna go for ysera and mal'ganis