Leonin Sun Standard

An anthem you pay for by the swing rather than the slot. Most team pumps are fixed: Glorious Anthem and its kin tax your board permanently in exchange for a static buff, and the moment they hit the battlefield they announce exactly how big your creatures are. This artifact sells the same effect as a repeatable activation, which changes what the card is for. It does nothing on an empty board and nothing without open mana, but it converts surplus white into reach: a flooded hand of lands becomes a finishing burst, and an opponent's blocking math is never settled until you tap out. The cost structure is the tension. Each pump runs and lasts only through end of turn, so it scales with how much mana you can sink in a single attack rather than with how long the artifact survives. That makes it a mana-sink for go-wide white decks that expect to outnumber rather than outclass: the wider the board, the more each activation buys. It also dodges the chief weakness of a creature-based lord, sitting on the battlefield as colorless artifact text that sweepers aimed at bodies leave untouched. The trade is that it demands mana every turn rather than once. The card rewards a board that is already broad and a hand spilling over with lands; it pays off flooding, but it cannot manufacture the flood on its own.