Using Converted Wild Cards to Unlock New Cards

If you have max wild cards and you get a wild card that converts into a card of that rarity, can the card the game gives you be a card you have not yet unlocked?

For example: I have 20/20 legendary wild cards and have not unlocked Phoenix (I have reached the required arena). If I get a legendary wild card, is it possible for that to convert to Phoenix or will it only convert into a legendary card I already unlocked?

No — it won’t do that.

Ah, bummer lol