Illuminated Folio

Five mana up front for a draw engine that charges a second fee in cards, not just mana: one mana, the tap, and two cards from hand that share a color, revealed and kept rather than discarded. Because the cards stay in hand, each activation is genuine card advantage, a clean plus-one, but the reveal clause is what keeps that advantage honest. Card draw on a stick is one of the safest engines a deck can run, so the design taxes it twice: the steep cost to deploy and turn it on slows the early game to a crawl, and the color requirement ties the engine's reliability to how your hand clumps chromatically. A mono-color deck powers it trivially; a five-color pile of off-color spells can find itself holding a book it cannot switch on. That second tax is the interesting part, because it rewards the deckbuilding instincts that off-color fixing usually fights against: the more your hand coheres around one or two colors, the more reliably the page turns. And the engine never runs on empty topdecks, since it needs two same-color cards already in hand to fire; it is the grinding, refilling deck that wants this, the one that keeps a stocked hand and converts surplus into a steady stream of new cards once the explosive turns are behind it.