我が道を行く発明家 万博 is a Weiß Schwarz card from 「ひなろじ ～from Luck ＆ Logic～」Vol.1 HLL/WE28-04. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 At the beginning of your opponent's attack phase, choose 1 of your 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, choose up to 1 character in your waiting room, and return it to your hand.