Argothian Elder

Tap to untap two lands, and the activation profits the moment either of those lands taps for two or more mana. On its own that profit is fixed and modest, since the ability refreshes lands rather than the Elder itself; one copy nets a few mana per turn cycle, then sits idle until its next untap step frees it to do the job again. The leap to combo piece comes when you bolt on an outside untapper. Wirewood Lodge is the canonical partner: untap the Elder with the Lodge, point the Elder's two untaps at the Lodge and a second high-yield land, and the loop produces arbitrarily large mana so long as the two untapped lands generate more than the cost of running it once more. That ladder from a 2/2 mana dork to an engine is the appeal, and it belongs to an early era that learned hard lessons about how dangerous untapping permanents could be: the same wave of design that produced Tolarian Academy and a glut of broken acceleration. The Elder is a quieter relative of those excesses, a body that wants nothing more than to be aimed at lands worth untapping twice. It rewards land quality over land quantity, an idea green has returned to often, though rarely with a button this clean.