"Perforation" Ability, Cyan Pile (AW/S43-E095 C) [Accel World -Infinite Burst-]

[CONT] During your opponent's turn, this card gets +2000 power. [AUTO] [(1)] When a card named "Lightning Cyan Spike" is placed on your climax area, you may pay the cost. If you do, this card gets the following ability until end of turn. "[CONT] If this card would attack, you may instead choose a character on your opponent's back stage, and have this card frontal attack with the chosen character as the defending character."