Sudden Strength

The pump-and-cantrip is the most forgiving combat trick a green deck can run, because it never strands you. Most tricks are bets: you commit the card on the assumption that the block or attack you anticipated actually happens, and if your opponent reads it and declines the trade, you have spent a card for nothing. Drawing a card off the back end erases that downside. Whether the +3/+3 wins the combat, saves your creature from a removal spell, or simply pushes an extra three damage through, the replacement keeps your hand from contracting. The four mana price is what pays for that insurance: at one or two mana this would be too clean a tempo play, so the cost pushes it back into the territory of a card you cast on a turn you were not going to do much else with anyway. That tradeoff drives the entire design, and it explains why green keeps reprinting variations on the template rather than just printing a bigger pump. This is the early, plain statement of a pattern Wizards has returned to whenever it wants green to have an aggressive trick that does not feel like a gamble: spend more, get a guarantee, and let the card draw do the work of making the play feel free even when the combat math does not break your way.