Survival of the Fittest

The first tutor that paid for itself in tempo rather than card economy. Most search effects of the era charged you cards or life or a heavy mana cost; this one converts a creature you already have into the exact creature you need, for a single green mana, repeatable every turn. The discard is not a cost so much as a fuel line: it feeds the graveyard while the activation builds your hand, which is why the engine got so dangerous once recursion entered the picture. Pair it with a reanimation outlet or a graveyard-as-resource shell and the "discard a creature" clause stops being a tax and becomes the whole point, with the toolbox search just deciding which threat resolves first. The activation can fire at any time, so a single untapped Forest turns it into an answer for nearly any board state, finding a blocker, a sweeper-on-legs, or a combo piece on demand. That ceiling is why it keeps landing on the wrong side of various format lines: a two-mana enchantment that turns redundant creatures into perfect ones scales with the rest of the format faster than its rate suggests. The design is deceptively narrow on the page (it only finds creatures) and enormously wide in practice, because "creature card" has come to mean ramp, removal, recursion, lock pieces, and finishers all at once.