Damage Control Crew

The modal enters-the-battlefield trigger is green's way of stapling a second use onto a body you were casting anyway, and both halves here draw from green's oldest wells: Regrowth-style recursion and Naturalize-style disruption, folded into a single fair creature. Repair is recursion with a floor: it reaches back only for cards of mana value 4 or greater, which pushes you past grinding a mana dork and toward returning whatever expensive payoff already hit the yard. Impound is straightforward artifact-or-enchantment exile, the kind of answer green usually pays a full card for. The choice between them is the whole design, and the timing is the wrinkle: because the mode is picked when the trigger goes on the stack after the creature enters, you get to read the board with the 3/3 already present before committing to rebuild or to break something. That is a meaningfully later decision point than a cast trigger would offer, and it is what earns the four mana. Neither mode is strong enough to warrant the card alone; the value is holding both options open until the last responsible moment, then spending one while keeping a serviceable blocker. It reads as a workmanlike toolbox creature, the kind of card that fills the middle of a curve without demanding a slot, useful precisely because it answers two different questions and asks you to choose only once you know which one the game is asking.