Scourge Servant

Infect is what rescues this 3/3 from being forgettable, and the rescue is total: the keyword replaces combat damage outright, so every point this creature lands on a player is a poison counter and every point it lands on a creature is a -1/-1 counter. Ten poison ends a game, which makes three poison per unblocked swing a full third of a kill, and there is no drawback to track, no upkeep cost, no trigger to remember: clean, unconditional output with nothing to pay for. The trouble is where it sits in the archetype. Poison decks live at one and two mana, where a cheap body can carry an early pump spell, and they close with trample or proliferate stapled on. A five-drop vanilla infecter is neither the enabler nor the finisher; it is the unglamorous filler that does its math honestly while the cards above and below it on the curve do the work that actually wins. What it illustrates is how steeply infect rescales a stat line that would otherwise be ignored: the keyword is doing far more for this body than the body is doing for any deck that runs it.