Frontier Mastodon

Ferocious was green's reward for going big without going slow, and this Elephant is the mechanic at its most literal: clear the power-four threshold somewhere on the board, and a 3/2 arrives as a 4/3 instead. The condition checks as the creature enters, so it scales off whatever you have already deployed rather than asking the body to grow on its own. That makes it a payoff that wants to land second, after a Leatherback Baloth or some other oversized body has set the table, while costing you nothing if the table is empty (you still get a 3/2 for three mana). The design logic is honest about its own ceiling: the counter is a one-time enter-the-battlefield bump, not a recurring engine, so the card never spirals out of a green stompy curve into something it was not meant to be. It sits at the common-rarity floor of the ferocious idea, built to fill out the early curve of a fatties-and-fixing green deck and reward the same threshold the rest of that deck is already chasing.