Durkwood Tracker

A defensive bow strung onto a body, and a quiet revival of one of the oldest creature abilities in the game. The activated ability is the Cockatrice and fight template stripped down to its punitive form: it can only target attacking creatures, so the Tracker plays gatekeeper rather than assassin, picking off whatever swings into it while taking the return blow itself. The mutual-damage clause is what holds the rate in check: a 4/3 that trades blows with its target survives only against attackers small enough that three toughness is enough, and a big enough swinger can survive the four damage while still killing the Tracker. Because firing the ability taps the creature, it answers one attacker per turn, and the damage clears at end of turn rather than accumulating, so the Tracker meets each combat at full life rather than wearing down across them. It functions less as removal than as a tax on attacking into open green mana, the kind of pillow-fort discouragement that makes an aggressor think twice before committing the alpha strike. Five mana for the body and then more to fire it makes this a slow engine, and a creature that has to survive each fight to keep policing combat lives or dies on a toughness it does not have much of.