Storm the Festival

The double-spell built for green ramp: six mana turns five cards into two hits, and the mana-value-five-or-less clamp is what shapes the whole payload. You are not fetching a haymaker; you are stacking two permanents that each cost five or less, which pushes green toward planeswalkers, midrange creatures, and value engines rather than a single fatty. That constraint is doing real work, because two four-drops on turn six is a bigger board swing than any one seven-drop, and the "permanent" scope means artifacts, enchantments, and planeswalkers all qualify alongside creatures. The flashback cost is the second act: at ten total mana it is not a spell you cast early from the yard, but late in a game where you have flooded on lands, casting it again converts dead mana into two more bodies pulled from your remaining library, and the exile clause caps the recursion at exactly one. It is card advantage measured in permanents rather than cards drawn, which matters in the grindy midrange mirrors green ramp decks are built to win: every cast can replace itself twice on the battlefield, where the game is actually decided.