Whitesun's Passage

Five life for two mana, no upside, no surprise: a pure lifegain instant that exists to round out a color's defensive options and almost nothing else. The instructive thing is the rate. Healing Salve gave you three for a single white pip in the earliest days; the going line on a dedicated lifegain instant has hovered around three to four life per mana ever since, because pure life as a resource trades poorly against board presence and card advantage. Whitesun's Passage sits right on that curve, buying a fifth point of life by costing an extra generic mana and refusing to do anything other than gain life. There is no cantrip stapled on, no creature attached, no instant-speed combat blowout: the entire transaction converts two mana into a five-point cushion at the moment of your choosing. That choosing is the only strategic texture it has, since being an instant lets it ambush a racing aggro draw or push past a burn finisher. Clean, deliberately unexciting design, the sort of effect that fills out a color's safety net without ever asking to be built around.