Cenote Scout

Explore is a mechanic built to guarantee upside, and this one-drop is the mechanic stripped to its cleanest chassis. A single green mana buys a creature whose enters trigger branches on what sits atop your library: a land smooths toward your next drop by going straight to hand, while a nonland grows the body to 2/2 and hands you a deferred decision (keep the card on top or bin it). That is a surprising amount of decision density for one mana, and the design lesson is how explore lets a common carry two mutually exclusive upsides without ever printing a dead line. There is no floor where nothing happens. When you are short on lands, the trigger can find one; when you are flush, the miss is the outcome you already wanted, a bigger attacker plus a preview of the next draw and the power to send it to the graveyard. A green one-drop with a modestly variable body is not the kind of card that reshapes an era, but the mechanic doing the shaping rewards understanding: explore folds card selection, incremental growth, and graveyard setup into a single enters-the-battlefield line, and this is that line at its most legible.