March of Burgeoning Life

Tutoring an exact copy is a strange thing to hang a spell on, and it is what makes this one worth studying. The payoff is deliberately clones-of-what-you-already-have: it finds a creature with the same name as one already on the battlefield, so the value scales with how repeatable your best bodies are rather than how big your library's top end is, and that constraint governs everything else. X gates which creature you can copy, since the target's mana value must be less than X, so it never functions as cheap reanimation for a haymaker. The additional-cost clause runs the other direction: exiling green cards from hand shaves the price two at a time, turning surplus green spells and redundant creatures in hand into tutor velocity. The pieces pull against each other in a way that rewards a deck built around a specific creature you want two or three of, not a grab-bag of one-ofs. As an instant, it also lets you drop the duplicate at the end of an opponent's turn, holding up the copy until you know the original will still be standing to target; the tapped clause is the price for that flexibility. It belongs to a cycle of march-named cards, each pairing an exile-cards additional cost with an effect in its own color; this is green's tutor-and-duplicate variant, and its ceiling lives entirely in how much a second copy of one particular creature is worth to you.