Goddess of Night, Nyx (AW/S43-E040 U) [Accel World -Infinite Burst-]

[CONT] This card cannot side attack. [AUTO] [Put a card from your hand into your waiting room] When this card is placed on the stage from your hand, you may pay the cost. If you do, put the top seven cards of your deck into your waiting room, and deal X damage to your opponent. X is equal to the number of cards named "Nox Core" among those cards. (This damage may be canceled)