Some cards require huge grind in farming certain mobs in certain location, fishing, gathering or doing dungeons.
level 58 Quest:Saving Seeliewood I, Quest:Saving Seeliewood II.level 42 Acarum Crisis I, Acarum Crisis II.Some cards are quest rewards from new quests or Exodor story quests. There are 5 different types of cards: Characters of TERA, Monsters, Gatherable (Ore, plant etc), Fish and Location. Rest are collected and you need 20 card fragments for 1 complete card.