Krotiq Nestguard

A 4/4 body arriving on turn three is a rate green rarely hands out cheaply, and Defender is the toll: the card pins that oversized frame to the ground until you have mana to spare. What you buy for the price is a wall that patrols reliably while you develop, then converts into a real clock once the game stalls. The catch worth reading closely is that the ability lifts Defender only for the turn you pay, so guard duty resumes automatically next turn unless you pay again. That per-attack toggle lets you decide, combat by combat, whether the body is holding a line or breaking one, rather than committing it to either role permanently. Green has a long tradition of walls that eventually swing (ramp decks have parked behind defensive bodies for years before turning the corner), but most of those either stayed defensive forever or flipped permanently once a condition was met. Charging mana every time you want to attack keeps the aggression honest: the card wants to block while you build, then wants to close, and it never gets to do both on the same turn for free.