There are afew more cards related to quests, or questitems.
Yrvantis
Quest ID: 425020 [Gegenangreifer] - this quest is race dependend (dwarf only)
Card ID: 771251 / Mob-ID: 106561 [Card - Auflauerer-Phantom]
Coast of Opportunity
Snakes
Quest ID: 423834 (Gefährliche Mission)
Card ID:771024 / Mob-ID: 105276
Card ID:771025 / Mob-ID: 105277
Chrysalia
Quest-Item(random drop, quest then disappears, mob never respawns after quest completed)
unfortunaletyl, i don't remember quest. But maybe you can check spawn conditions for these mobs
Card ID: 778355 / Mob-ID:106874