頼れる助っ人 舞昼 is a Weiß Schwarz card from 甘神さんちの縁結び AMG/W121-010. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 When this placed on stage from hand, choose 1 of your 《Fate》 characters, this turn, it gets +X power. X equals the number of your 《Fate》 characters times 500. 【AUTO】 When a CX with a Choice Trigger is placed in your CX Area, choose 1 of your characters, this turn, it gets +500 power and the following ability, "【AUTO】 (1) When this attacks, you may pay cost. If you do, during the Trigger Step of this attack, perform Trigger Check twice."
This card was printed in Japanese only; the English text above is an unofficial community translation.