Blight Sickle

Wither turns combat math inside out, and this is the cheapest way to bolt it onto any body you like. Damage dealt as -1/-1 counters does not heal away at the cleanup step: a single connecting hit permanently shrinks a blocker, so the equipped creature trades up against anything it touches and leaves the opposing board diminished for the team behind it. The +1/+0 is almost incidental; the real work is converting any creature, even a 1/1 token, into a slow attrition engine that makes blocking it a losing proposition over multiple turns. The equip cost is the restraint built into the design: at two to attach, the counters accumulate slowly enough that you are committing a creature and a turn's mana to grind down a board rather than swinging a single decisive combat. That makes it a card about repetition rather than a finisher. The counters are still damage, so lifelink still gains and damage-prevention shields still stop them. But the sneakiest property is what wither does to creatures that should not care about combat damage: indestructible offers no protection, because the -1/-1 counters reduce toughness directly, and any creature whose toughness reaches zero is gone the moment the game checks, no matter how indestructible it is. For a deck built to chip away at a defensive wall, putting a lasting dent in every creature it crosses (and quietly invalidating the blockers that think they are safe) is a slower, meaner kind of removal than burning a single threat off the table.