Power Cards are pre-made Combo cards that can be played in one turn during Battle. Because Power Cards can be played without creating a Combo in battle, their swiftness is an advantage. Power Cards are generally not as powerful as the original Combo and lacks the ability to benefit from Combo related skills.
Because a Power Card is already combo'd, it cannot be researched with any additional cards. "Power Cards don't have combos."
Power cards are marked in battle with Combo icon ( ) once played in Battle.