Goblin Javelineer

Most one-drop bodies with a ping attached point the damage outward on a tap ability: Prodigal Sorcerer and its many descendants sit back and shoot at whatever they like. This one flips the geometry, tying the trigger to being blocked rather than to a chosen target. That makes it a tax on the defender: engage this attacker and the wall takes a point, so the interaction only pays out when the opponent commits a creature to combat. Against a board of 1-toughness blockers the math bends hard toward the attacker, since a chump that steps in front gets shot before combat damage and dies for nothing. The haste completes the design, giving it a first-strike-adjacent deterrent that arrives ready to swing the turn it lands, so the pressure to find a good block (and the cost of finding a bad one) shows up immediately. It is a small, honest piece of aggressive-red engineering, the kind of common that quietly forces a defender into worse combat math than they expected.