Beyond the Rules, Shishiro Botan [hololive production Vol. 2]

[AUTO] When this card is placed on the stage from your hand, if your memory has 4 or less cards, you may choose 1 "5th Generation" character in your waiting room and 1 card in your memory, and exchange them. [AUTO] [(1) Put 1 card from your hand into your waiting room] When this card is placed on the stage from your hand, you may pay the cost. If you do, choose 1 "hololive" character in your waiting room, return it to your hand, choose 1 of your other "hololive" characters, and that character gets +1000 power until end of turn.