A-Llanowar Loamspeaker

The mana dork that fixes and then, later, becomes a finisher's accomplice. Elvish Mystic and its many descendants have always fixed the manabase by accelerating; this one fixes it by producing any color, which is the rarer and more valuable half of what a dork can do. That alone would make it a two-mana rainbow-ramp piece. The second ability is where the design widens: turning a land you control into a 4/4 with haste, at sorcery speed, converts your surplus into a threat without asking you to spend a card. The land keeps its type, so it still taps for mana on the turns you leave it alone, and the animation is a decision you make on your own main phase rather than a combat surprise. The effect wears off before the opponent untaps, which is the constraint that keeps the second mode fair: the land can't block on the crackback, and you get one swing rather than a durable body. The result is a creature that scales with the game state it helped build: early, a color-fixing accelerant; late, a way to spend excess lands as damage. Land-animation has usually lived in dedicated shells (Zendikar's awakened lands, the old Mishra's Factory tradition), but stapling it to a mana creature makes the effect incidental rather than a build-around, and that is the quietly cunning part of the design.