Razor Swine

First strike on an infect creature is doing more than the combat math suggests. Because infect deals damage as -1/-1 counters rather than ordinary damage, a first-striker that connects in the blocking fight shrinks the blocker before that blocker's damage step ever arrives: two power means two -1/-1 counters laid down first, enough to kill most small ground bodies outright and survive a trade it would otherwise lose. Against players, none of that matters; an unblocked swing simply hands out two poison and the first strike sits idle. That split defines what the card is for. Infect aggro lives and dies on getting through, so a creature that wins the ground fight on the way to the face is built to keep the clock running once the opponent finally commits a body to block. The one-toughness frame is the cost: a single -1/-1 counter, a chump from any poison source, or any one-damage effect ends it, and first strike does nothing against removal aimed before combat resolves. It is a small, sharp piece of an archetype that wants exactly two things from its threats, evasion-by-attrition and a fast poison total, and asks them to be cheap enough to flood the board before the answers arrive.