あなただけを想う レム is a Weiß Schwarz card from 「Re:ゼロから始める異世界生活」Vol.4 RZ/S132-078. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 At the start of your CX Phase, choose 1 of your characters, this turn, it gets +1000 power. 【AUTO】 {CX Combo} When the Pants CX (097) is placed in your CX Area, if you have 2 or more other Red or 《Magic》 or 《Weapon》 characters, choose 1 of your other characters, this turn, it gains the following ability, "【AUTO】 [Discard 1 card] When this card's battle opponent is Reversed, you may pay cost. If you do, choose up to 2 Red or 《Magic》 or 《Weapon》 characters in your Waiting Room, add them to hand."
This card was printed in Japanese only; the English text above is an unofficial community translation.