Nowadays be happy to receive any reward card. Nowadays I rarely receive reward cards. I receive mostly alchemy and legendary potion charges. I am playing Splinterlands since 2018.12.30, and this game is used to be so much better in the past. I remember receiving at least one reward card (sometimes even more reward cards) for completing the daily quest in 2019.
Nowadays sometimes I do not receive any reward cards even in the season end rewards, let alone in the daily quests. Because of the lack of proper rewards, I took a break from playing Splinterlands multiple times in the recent past, and nowadays I rarely play Splinterlands.
Hopefully the developers soon will do something to make Splinterlands great again.
Good luck and have fun.