Card Realm is a collectible card game where you can get cards from different tiers: Common, Rare, Epic and Legendary.
The cards are obtained by opening packs, the number of cards in the packs are determined by the luck level and the ascension level.
The luck level determines the probability of obtaining cards from each tier, the higher the luck level the higher the probability of obtaining cards from higher tiers.
Once you have completed the collection you cand ascend, this will reset the luck level and the collection to 0, but increase permanently your ascension level.