Heal

The smallest prevention shield in the game stapled to a delayed cantrip, and a window into how Wizards costed card draw in the mid-90s. One white mana stops a lone point of incoming damage and replaces the spell, but the replacement is throttled: you do not draw on resolution, you draw at the next upkeep. That delay is the design tax that keeps the card from being a free filter; you spend the mana and the prevention now and collect the card on someone else's clock, which means the prevention has to justify the slot on its own, and almost never does. The shield is so marginal that the cantrip is really the whole pitch, and even that pitch arrives a turn behind. What the card documents is an era when stapling "draw a card" to a spell was considered dangerous enough to shrink the spell and slow the draw down around it, before Wizards settled on the modern convention of drawing immediately when the cantrip resolves. Read against later one-mana white instants, the throttle sits in plain view: the floor of the prevention was set this low precisely because the card advantage was the half that worried the designers.