Gnarlbark Elm

The printed 3/4 is a promise the card cashes exactly once. It arrives as a 1/2, weighed down by two -1/-1 counters, and those same counters are the fuel for its only real trick: spend both to shrink a target while your own body swells back to its full 3/4. The math folds in on itself neatly, since the thing dragging the elm underwater is also the ammunition that answers a creature and rebuilds the attacker in a single stroke. What sharpens the design is the sorcery-speed clause. This is not a card you can leave up as a threat during an opponent's turn; you commit to the effect on your own main phase, which turns every activation into a decision about tempo. Do you cash in immediately to clear a blocker and swing with a suddenly full-sized body, or wait for a target worth the trade while sitting behind a defensive 1/2? Once the counters are gone they are gone: the elm settles into a 3/4 with no fuel left until new counters arrive. Treefolk usually grind upward from an already-large toughness base, a static wall that only gets taller. This one starts diminished and works its way back to its printed frame, a curve that reads more like black's long tradition of counter-manipulation than the tribe's green comfort zone, and a more interesting shape than a beater that simply sits there.