Cell Phone is a Weiß Schwarz card from Disgaea DG/EN-S03-E158. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
Search your deck for up to two 《Teacher》 characters, reveal them to your opponent, put them into your hand, and shuffle your deck. Choose two cards in your hand, and put them into your waiting room.