Old Man Willow

The scaling body is the obvious hook, but it is the attack trigger that gives this treefolk its real teeth. Tying power and toughness to land count means the creature grows on the same clock as your ramp, so a deck already pushing lands onto the battlefield is quietly assembling a threat that costs no extra investment. The clever part is how that same land-heavy shell feeds the second ability: the sacrifice is optional and fires on the swing, converting spent tokens and expendable bodies into a repeatable -2/-2 that clears blockers before combat damage resolves. That timing matters. Because the shrink lands as attackers are declared, it can pick off a would-be blocker outright or push a creature into range against a swing, and it does so at the moment the opponent is least able to answer. The two halves reinforce each other along the same axis: a board wide with fodder both fuels the removal and, in an aristocrats shell, cares about the sacrifice for its own sake, while the land engine keeps the body large enough to matter after the shrink resolves. What holds it in check is the conditional cost. The trigger needs another creature or token to eat and it only reaches enemy creatures, so it never becomes a naked point-drainer or a way through planeswalkers. It is a sacrifice payoff dressed as a beater, wanting a shell that treats its own board as ammunition.