With both Kaladesh and Ixalan in Standard, it would be the right time for it, if there ever was one, but it hasnt happened yet, so I guess the theme doesnt have much to offer for cnostructed, unless they really want to push it, which I doubt theyll do
In the land of Middle-earth, though, Im seeking solely to create little treats for my Halfling friends to feast upon
Even though Cloud, Ex-SOLDIER offers additional card draw for each equipped creature, it still ends up being far better to just focus on piling everything on Cloud and protecting him rather than spreading it out: you'll kill people faster with commander damage, you'll reap bigger rewards off stuff like Behemoth Sledge gaining you way more life, and it's simply easier to protect a single creature than trying to protect your entire board
You all get so excited about these worlds, and everybody talks about them
A 3 mana tutor that searches for any instant or sorcery in the color that is best known for its interaction with these card types feels like an obvious card design that just went overlooked after dancing around it with tutors like Fabricate and Merchant Scroll