310.8d If a battles protector is a different player than its controller, all rules and effects that refer to the defending player relative to a battle that is being attacked refer to that battles protector rather than its controller
2009-02-01 You can choose to find any card with the Plains land type, including nonbasic lands
1,000 Incredible Costume and Cosplay Ideas: A Showcase of Creative Characters from Anime, Manga, Video Games, Movies, Comics, and More
So it's no wonder why Nyxbloom Ancient is perhaps the most hyped card in the set, being a straightforward bomb that launches your deck's mana into the stratosphere
Since those work by similarly only applying the activated ability (and not any Static abilities) your idea should work too to draw cards for very cheap (or free with your Skirge Familiar)