For My Comrades, Rimuru (TSK/S82-E001S SR) [That Time I Got Reincarnated as a Slime Vol.2]

[AUTO] When your other character's battle opponent becomes [REVERSE], choose 1 of your "Demon Continent" characters, and that character gets +500 power until end of turn. [ACT] Brainstorm [(1) [REST] this card] Flip over 4 cards from the top of your deck, and put them into your waiting room. For each climax revealed among those cards, search your deck for up to 1 "Demon Continent" character, reveal it to your opponent, put it into your hand, and shuffle your deck.