See the Unwritten

A six-mana green payoff with a paradox baked into its reward structure: the Ferocious clause doubles your haul only when a four-power body is already on the table, so the spell built to break open a stalled game does its heaviest lifting when the game is already breaking your way. The base mode digs eight deep and lets you pick a single creature to slam onto the battlefield, dumping the rest into the graveyard; the upgraded mode lets you pick two and stops feeling like a coin flip. Power-four-matters gave green a payoff scaffold it could build toward without leaning on tribal types or graveyard recursion, and few designs from that era cash the mechanic in this bluntly. The cost is information and commitment: revealing eight cards face-up shows your board plan and forces the extras into your own graveyard, so the selection you get is confined to whatever creatures happen to surface. You choose among them, but you do not choose what turns up. It rewards a top-heavy pile of fat threats and punishes a deck that hedges its curve, an all-or-nothing knob that suits ramp precisely because ramp is willing to pay it. Flip two hasty bodies off a loaded eight and the game ends a turn early; hit lands and noncreature spells and you have spent six mana filling your own yard.