Rainveil Rejuvenator

Most mana dorks tap for a fixed pip and die to a stiff breeze: the whole class, from the earliest one-drops onward, trades durability for tempo. A 2/4 that adds green equal to its own power inverts both halves of that bargain. The body survives a sweep or a bad block that would delete a fragile accelerator, and the ramp scales with any anthem or pump you layer on top, so the same creature that adds two green untended can add far more once the board grows. That scaling is also the discipline that keeps the rate in check: a bigger green board already tends to have the mana it needs, and left alone the 2/4 produces exactly two, no more. The mill trigger is the wrinkle. Optional self-mill on a green midrange body reads like a stapled-on rider until you notice what it feeds: green's long-standing graveyard-value plans, from reanimation targets to escape and delve fuel to the payoffs that reward a stocked yard. The two lines answer each other. The extra green a grown body produces needs a sink, and the cards you dig toward with the mill are often exactly the expensive things that green mana wants to cast. This is a ramp piece that wants to be a creature first and a mana source second, built for green decks that treat the graveyard as a resource rather than a dumping ground.