Arcanist's Owl
The four pips are the design commitment worth reading here: they let the same card fill a slot in a mono-white shell, a mono-blue shell, or any Azorius split between, without ever demanding a specific ratio. That castability is the enabler's whole point, because an artifacts-and-enchantments deck wants to run this consistently, not as a color-dependent luxury. The body is a fine flying blocker, but the enter-the-battlefield dig earns the slot: four cards deep, with the right to pull any artifact or enchantment into hand, and the leftovers go to the bottom in a random order rather than back on top. That last detail matters. You are not sacrificing knowledge of your next draws (the looked-at cards leave the top entirely), and the swing is clean: a card in hand plus a 3/3 flier on the battlefield. The filtering is narrow by type but wide within it, which is the balancing lever. A deck built around permanents turns the Owl into a reliable tutor-adjacent dig every time it lands, letting it run a leaner threat count and trust the bird to assemble whatever engine piece is missing. A deck with no artifacts or enchantments gets a 3/3 flier and four looks that whiff. It is a purpose-built engine enabler wearing the costume of a fair midrange creature, and the hybrid cost is what smuggles it into more decks than its narrow trigger would otherwise reach.
