Timbermaw Larva

A flat green four-drop body that pays you back for the deck you were already building. The attack trigger keys off your Forest count, so the larva grows in proportion to a heavily mono-green manabase: lean into basics and it swings as a real threat, splash a second color and it shrinks toward its printed 2/2. That coupling is the design idea, an early stab at rewarding color commitment through a creature rather than a land or a spell. The catch is that the trigger only fires on the attack, so it offers nothing on defense and nothing until you commit it to combat; it asks you to be the aggressor before it pays out, and a 2/2 sitting back is just a 2/2. There is a subtler tax, too: the boost counts Forests, the subtype, not every green source, so non-Forest green lands and mana creatures contribute nothing, which quietly pulls against the dual-land fixing most decks want. This is one of those creatures whose real stats live on the battlefield around them rather than on the card itself, and like its kin it lives or dies on how pure you are willing to keep your mana.