other methods to earn card relics

hey im back :p i want to ask if its possible to add anoterway to earn card relicd because as for me i dont do the daily quests quite much (no time to run a full game and for some other reasons). Id like to suggest that the bosses / horseman could drop a tiny amount of card relics. only a small amount would be nice for casual players as it all will add up with time :)

Are you playing 200-wave Easy? Shouldn't take too long. Hell, with a good deck, you can even AFK the last half of the game.