Rabid Bite

Green's removal has always killed through power rather than around it, and this card turns that constraint into its whole engine: your creature's power becomes the reach of the spell. A stalled board with a 6/6 on it suddenly has six damage to point somewhere at sorcery speed, while a board with nothing bigger than a 2/2 has nothing worth casting this for. That dependency is the design. The damage is dealt one-sidedly: only your creature deals damage, so it stays at full health and takes nothing back. That is what separates the bite template from the older fight template, where both creatures deal damage to each other and you risk losing your own creature in the exchange. Prey Upon is the fight version of this idea; this is the version that stripped the symmetry out by denying the opponent's creature any return blow. The sorcery-speed limit is the price of that safety, since instant-speed access would turn green into a removal-rich tempo color. Instead you commit on your own turn with your creatures already in play, and the opponent gets a window to sacrifice or bounce the target before the damage lands. You don't get to destroy a creature outright; you point your biggest one at a smaller one and end it for two mana.