Every enemy in the game has a 12.5% (1/8) chance to drop their respective Basic Card. Buying boosts will raise that chance. Upgrading a Card to the next tier will always require 5 Cards from the previous tier.
- Corrupted enemies do not have any higher of a chance to drop their respective Card, nor of higher rarity.
- An Elite/Super Card can be obtained in any way to obtain the skill it grants.
- Losing the Elite/Super Card in any way also removes the ability to equip the skill it grants.
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