Cho-Arrim Alchemist

Three mana and a discarded card buys a single prevention shield aimed at one source: that is the whole transaction here, and it tells you everything about how cautiously this era priced renewable utility on a body. The activation cost (one and two white, tap, plus a card from hand) dwarfs the effect, which only stops damage to you, leaves your other permanents and planeswalkers exposed, and converts whatever it prevents into life. The structural logic is sound even where the rate is not: because a 1/1 can repeat this turn after turn, the per-use cost had to sting, and it does. White already had cheaper, broader prevention when this kind of design appeared, so the renewable-valve framing never overcame the tax. What the card preserves is the discipline at its most conservative: a fragile creature that sells tap-and-discard activations for a one-shot prevention against a single source, asking you to keep refilling a hand to feed it. The body is incidental; the discard is the cost; the prevention is narrow by design. It is a clean illustration of how this class distributed costly, repeatable spell effects across the color pie without ever letting any single one outrun its mana value.