Ocular Halo

Turning a creature into a repeatable card-draw engine is an old dream, and the cleaner versions of it have always lived a tier above this rate. The design pays for its repeatability with friction: the draw requires tapping the enchanted creature, so you are trading an attack, a block, or an activation every turn you want a card. The white activation is the tell that someone noticed exactly this problem. Pay one white mana for vigilance and the creature can swing without tapping, which leaves it upright and free to tap for a card on your terms: the difference between a do-nothing aura and a body that pressures life totals while it refills your hand. That secondary cost is also a gentle nudge toward Azorius, where an enchantment that wants both a sturdy host and a steady defensive posture naturally belongs. The catch is the catch of every creature aura since the keyword existed: the investment evaporates the moment the host dies, and the vigilance kicker does nothing about that. It buys tempo, not survival. A four-mana enchantment that draws a card a turn is a slow enough engine that an opponent has plenty of windows to break it before it pays off, and the white mana that lets you attack and draw in the same turn cannot stop a removal spell from turning the whole investment into a two-for-one in their favor.