Muerra, Trash Tactician

Magic has always quietly tracked how much mana you spend casting spells in a turn without ever paying you for it; this card reads off exactly that. Most tribal payoffs and most ramp creatures ask you to cast a certain kind of spell or reach a certain count. This one only cares about the cumulative fourth and eighth mana you spend, which makes it agnostic about what you spend it on. The elegance is that the two halves of the card feed each other. The dawn-of-turn mana scales with how many Raccoons you field, and that pile of red and green is precisely the fuel needed to trip both thresholds in a single turn: cross four mana for the three-life cushion, cross eight for the two-card dig off the top. The tribal ramp and the resource sink end up being the same button, which is a tidier bit of engine-building than the raccoon-and-garbage framing suggests. The 2/4 body is deliberately unassuming; nothing here wants to attack, and the four toughness is there to survive long enough to keep generating mana on later turns. What caps the acceleration is that the mana only appears during your first main phase and only counts Raccoons, so the whole engine is gated behind how far you commit to filling the board with one narrow creature type rather than any warm bodies you happen to have.