A 5/4 trampler for four with built-in protection sits at or above the format's curve ceiling on rate, and the hexproof counter answers the specific problem BG Midrange and GU Goodstuff hit when they land a four-drop into open mana: Stomped by the Foot and Grounded for Life both pick off bare threats before they connect. Leatherhead can't be touched by either on the turn she arrives, then converts that protected tempo into a permanent kill the first time she swings through.
P1P3 in any green seat, climbing toward P1P2 over most non-bomb commons once you're committed to green. BG Midrange wants her highest: the deck is built to grind, and spending a combat step on a Naturalize for Dimensional Exile or a parked Bespoke Bō is exactly the rate it needs to crack open stalled boards. GU Goodstuff treats her as a curve-topper that incidentally answers the artifact half of UR, which leans on its equipment and artifact creatures to win damage races. An RG splash values her lower: she's a fine body, but the question of whether to spend the counter is a midrange one, not a racing one.
Maindeck in every green deck that can cast on four. The constraint is exactly that double-green: a heavy splash shouldn't take her over a card it can cast on curve. The real tension is the pilot's, not the opponent's. The hexproof counter that keeps her safe is the same resource each kill consumes, so every artifact or enchantment she destroys strips a layer of her own armor. In a removal suite this light, holding the counter is often the right line; the conversion is a choice, not a reflex.

