Triumph of Ferocity
A card-advantage engine gated behind a board-state test, which is a stranger thing to build than the steady draws of Phyrexian Arena or the life-paid clock of Underworld Connections. The condition rewards exactly what green already wants to do: deploy the biggest creature and keep it the biggest. When you control the highest-power creature on the battlefield, the upkeep trigger refills your hand for free; when you fall behind, it shuts off until you reclaim the top of the power curve. That makes it a reward layered on top of a position green already paid for, rather than an unconditional value tap. The tie clause does heavier lifting than the rate suggests: you do not need to dominate, only to match or exceed, so a single fatty or even a parity board keeps the cards flowing. The vulnerability is the one every "biggest creature" payoff carries: because the trigger checks raw power only once, at the start of your upkeep, an opponent who slips a larger body onto the battlefield, or who removes your biggest threat in the window before that check, simply switches the engine off for the turn. Few green enchantments try to convert combat dominance into raw resources, a job the color is otherwise built to do poorly. The design asks you to win the board first, then collect interest on the lead.
