Can you get unit or character cards from completing missions or tasks/achievements?

[Brazybear]

After playing for a bit, I realize that I need to know exactly how you get certain cards before potentially wasting precious Battle Forge points.  I tried searching already and could only found a random reply from 2023 suggesting that the only way to get specific cards is through Booster Packs and luck, or through purchasing them directly through the Auction house.  Is this really the case, and you can't, for example, get Viridya, Shamans, or any other character or unit from completing missions or through quests/achievements?  Thanks in advance.  

[Treim]

There is a few cards you can get by doing achievements and the tutorial quests. They are very limited and usually either give booster packs in general or give you endgame cosmetics like Promo Mana Wing or Promo Worldbreaker gun that focus more on giving experienced players a challenge. You can see which achievement rewards which card/Booster Pack by hovering on the right side over the coinbag/card symbol.
You can play the season which has some season related cards and booster packs but is also limited in scope. 
If you try to get very specific cards the best way is the auction house. It is also the most efficient way of completing your collection. 

Honestly though you get plenty of BFP over time by just playing so it is not as big a deal if you buy a card and figure out you dont like it. You can also always resell those cards to get some value back.
If you contact me ingame I can also help you out with some cards to get you started.
IGN: Treim

[Majora]

 

You can also get cards through achievements/quests and the seasonal system.