積み重ねた時間 is a Weiß Schwarz card from 葬送のフリーレン Vol.2 SFN/S136-095. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【COUNTER】 If you have 2 or more Blue characters, choose 1 of the following 2 effects and resolve it, a) "Choose 1 Blue character in your Waiting Room, add it to hand." b) "Choose 1 Blue character in your Waiting Room, add it to hand, then discard 1 card, then choose 1 of your characters, this turn, it gains the following ability, "【AUTO】 When this is sent from stage to Waiting Room, you may place this on stage in this card's former slot Rested."" 【CONT】 If this is in your Waiting Room, you may choose this for the effect of Pants Trigger.
This card was printed in Japanese only; the English text above is an unofficial community translation.