Harvest Season
The conventional ramp spell counts mana you spend or lands you sacrifice; this one counts creatures that happen to be tapped as it resolves, which pays you for the board state an aggressive or token-heavy green deck builds anyway. The wrinkle is timing: the count is taken on resolution, so the natural sequence is to attack, leave everything down after combat, then cast this in the second main phase. The swing is no longer a cost paid alongside the ramp but the very thing that loads the search. A wide board of small bodies converts directly into a fistful of basics onto the battlefield, and the asymmetry between a three-mana investment and five or six lands is the entire point. Any other reason your team is already tapped serves just as well: a mass-tap effect, or simply an alpha strike into an empty board, leaves you with exactly the number you need. The lands arrive tapped, which keeps the same turn honest, but the following turn opens with a mana base that has lurched forward by half a dozen sources. What separates it from the ramp lineage that measures raw mana is where on the turn it lives: it scales with the combat step, the phase green aggressive decks are usually already winning, rather than asking them to sit back and accumulate first.
