最大の信頼アイン is a Weiß Schwarz card from Phantom -requiem for the phantom- PT/W07-054. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 CHANGE［② Place this card in clock］At the beginning of your climax phase, you may pay the cost. If you do, choose 1 「“最強の暗殺者ファントム”アイン」 from your waiting room, place it in this card's previous slot. 【ACT】 ● ASSIST 1500 Level 1 ［Discard this card from hand to Waiting Room］ (Choose 1 Character being Front Attacked, during this turn, it gets +1500 Power)
This card was printed in Japanese only; the English text above is an unofficial community translation.