Jodah's Codex

Domain almost always scales upward: count your land types, then get a bigger burn spell, a bigger creature, more life. This inverts the relationship, turning land diversity into a discount instead of a bonus. The ability starts at and a tap, and each distinct basic land type among your lands shaves off a mana, so a mana base touching all five collapses the cost to the tap alone: a repeatable draw every turn from a permanent that shrugs off creature wipes. The to cast it is a genuine front-loaded tax, paid for a book whose engine still has to warm up, and the deeper price is the fixing you have to assemble before the engine gets cheap. What it asks for is not deck space but variety in your lands, the exact resource most builds work to compress rather than expand. That makes it a reward for greedy rainbow bases already eating a fixing tax for other reasons: the streamlined mono-color deck gets little discount here, while the pile running every dual and fetch it can find eventually cranks the ability for free. The engine comes online slowly, but once the discount bottoms out it never turns off, and because it lives on the board rather than the stack, its ceiling is a colorless card-advantage machine a wide deck can fire off every turn at almost no ongoing cost.