Wow! I just saw a post from 
In the mentioned post they did some calculations and reasoning, whether it would be worth to invest and they came to the conclusion, that it is not likely, that those cards, would be worth it to buy the packs and vouchers to get some guaranteed ones.
There is a 0,33% chance per pack to get an airdrop, and a airdropped card has a 1/25 chance to be gold, according to
Short analysis
Are those cards worth it?
Baakjira is a non attack high HP legendary water tank, that could be used as a substitute summoner. It gives increased health with strengthen to the own team and slows down the opponent with slow. It also has void and heal, which give it some good sustainability. But 6 Mana isn't cheap for a non attack monster. Although those 16 HP are quite a wall.
Uriel the Purifier is a legendary melee attacker of the life splinter. Having flying and recharge it has some problems, since it only attacks every other round, but then hits for 3x the damage for 9-12 melee damage. This is nice against big tanks like Baakjira, but could be a problem against forcefield, or if the enemy has a shield, that isn't destroyed already. Also Uriel is vulnerable against giant killer.
Heal gives him some better substainablity and redempetion could be useful against low health enemies.
From my first impression, both of these cards are nice, but not really some must have cards. I think that both have their use cases.
My chances
So far I do have 2 packs. I think that I will get a third one, before the end of the pre-sale. This adds up to a probability of under 1% to get an airdropped card with those three packs. Not really likely at all.
It would be over 1,3% if I would get a forth pack; but since even this is quite unlikely, I am not really going for it. Also since I do not think, that those cards are must have cards, my desire to get them is not high enough to justify buying more vouchers and packs.
Cheers,
