実力者たる霊媒師 星子 is a Weiß Schwarz card from TVアニメ『ダンダダン』Vol.2 DDD/S129-069. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 ENCORE [Discard 1 character] 【AUTO】 EXPERIENCE 3 - When this attacks, if the sum of Levels of cards in your Level Zone is 3 or more, look at up to 2 cards from the top of your deck, choose 1 card among them, put it back on top of your deck, and send the rest to Waiting Room, and this turn, this gets +3000 power.
This card was printed in Japanese only; the English text above is an unofficial community translation.